Locking mechanism and control method of food processor

Abstract

This invention relates to the field of household appliances, specifically to a locking mechanism and a control method for a food processor. The locking mechanism includes: a panel; a lever mounting part disposed on the back of the panel and having a positioning hole; a lever disposed on the back of the panel and having a pin pivotally connected to the positioning hole; an electromagnetic switch disposed on the back of the panel, capable of being locked or unlocked relative to the lever; the electromagnetic switch has a push rod capable of extending and retracting in a vertical direction, and the lever has an opening into which the push rod can be inserted. When in the locked state, the push rod is inserted into the opening; when in the unlocked state, the push rod is moved away from the opening. The food processor has the above-described locking mechanism. The locking mechanism and food processor provided by this invention can effectively prevent children from opening the door and causing burns, improving safety. Furthermore, for users who do not require a child lock function, the child lock can be easily deactivated, thus ensuring convenience.

Description

Technical Field

[0001] This invention relates to the field of household appliances, and more specifically to a locking mechanism and a control method for a food processor. Background Technology

[0002] Home appliances have improved people's quality of life, but some pose certain dangers to children. For example, food processors are usually placed on a table, and the door opening button is located at the bottom. This means that children can easily open the food processor door and touch heated food, posing a risk of burns. To prevent children from handling overheated food and getting burned, these appliances are equipped with child lock mechanisms. Current child lock functions are primarily designed to prevent children from operating the appliances improperly; to ensure that children cannot open the door and get burned, the door is locked.

[0003] However, the locking mechanism is generally complex and can affect other components inside the food processor, resulting in a complex or large overall structure. How to achieve a simple structure while ensuring reliable locking has become a challenge. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides a locking mechanism, comprising: a panel; a lever mounting part disposed on the back of the panel and having a positioning hole; a lever disposed on the back of the panel and having a pin pivotally connected to the positioning hole; an electromagnetic switch disposed on the back of the panel and capable of being in a locked or unlocked state relative to the lever; the electromagnetic switch having a push rod capable of extending and retracting in a vertical direction, and an opening provided on the lever for inserting the push rod therein.

[0005] According to the above technical solution, the lever mounting part is fixedly installed on the back of the panel and connected to the pivot of the positioning hole via a pin, allowing the lever to rotate relative to the lever mounting part. When the locking mechanism is in the unlocked state, the push rod does not obstruct the rotation of the lever, and the rotation of the lever can drive other components to open the door. When the locking mechanism is in the locked state, when the push rod is inserted into the opening, the lever is obstructed by the push rod and cannot move further, thus preventing the door from being opened. Therefore, the lever, lever mounting part, and electromagnetic switch are installed on the back of the panel, so that the three are compactly arranged and can cooperate with each other to reliably achieve locking. In addition, the push rod, which is set vertically, cooperates with the opening to reliably prevent the pressing force transmitted in the horizontal direction, and the vertical setting is easy to install, eliminating the need for unnecessary perforation of the side of the panel.

[0006] Preferably, the lever mounting part is integrally formed with the panel.

[0007] According to the above technical solution, the lever mounting part and the panel are integrally molded, which can reduce the number of parts and assembly steps, thereby helping to reduce production and manufacturing costs.

[0008] Preferably, when in the locked state, the push rod is inserted into the opening; when in the unlocked state, the push rod is moved away from the opening.

[0009] According to the above technical solution, when the electromagnetic switch is energized, it generates magnetism under the action of current, and the control push rod is inserted into the opening. When the electromagnetic switch is de-energized, the magnetism disappears, and the push rod retracts to the electromagnetic switch, thereby making the locking mechanism in a locked / unlocked state.

[0010] Preferably, the opening is located at the lower part of the lever, and the pin is located at the upper part of the lever.

[0011] According to the above technical solution, the opening is located at the lower part of the lever, allowing the push rod to be inserted into the opening after extending vertically, thus limiting the lower part of the lever. The pin is located at the upper part of the lever. The lever should rotate around the pin, but because the opening at the lower part of the lever is limited by the push rod, the lever cannot continue to rotate, and therefore cannot drive other components to open the door.

[0012] Preferably, the panel includes a front panel and a rear panel, with a through hole provided on the rear panel, and the lever also has a protrusion that can pass through the through hole.

[0013] According to the above technical solution, the protrusion passes through the through hole to transmit torque. When pressure is applied to the protrusion, it is pressed down, thereby driving the lever to rotate on a fixed axis. The protrusion passing through the through hole reduces the space required for the locking mechanism, allowing the electromagnetic switch to fit more tightly with the lever, which helps to improve the space utilization of the locking mechanism.

[0014] The present invention also provides a control method for a food processor, the food processor having the above-mentioned locking mechanism, the control method comprising:

[0015] Step S1: Obtain data related to the food being processed in the food processor;

[0016] Step S2: Calculate the temperature change curve of the processed object based on the data;

[0017] Step S3: When the temperature of the object being processed calculated in step S2 is lower than a predetermined threshold, a control command is sent to move the electromagnetic switch push rod in the locking mechanism away from the opening of the lever.

[0018] According to the above technical solution, data related to the object being processed is acquired in step S1, thereby determining the specific category of the object and facilitating the calculation of the temperature change curve of the object in step S2. Different categories of objects will have different temperature change curves, therefore, the temperature change curve of the object needs to be calculated in step S2. When the temperature of the object drops below a predetermined threshold, the temperature will not cause burns, and the locking mechanism can then unlock. This control method ensures safety while achieving unlocking of the locking mechanism in a more automated and intelligent manner, effectively improving user convenience.

[0019] Preferably, obtaining data related to the food being processed in the food processor in step S1 includes obtaining the weight data of the food being processed and / or the heating time data.

[0020] According to the above technical solution, after determining the category of the object to be processed, the weight data and / or heating time data of the object to be processed can be combined to more accurately analyze and judge the temperature change of the object to be processed, so that the calculated temperature change matches the actual temperature change, ensuring that the temperature of the object to be processed will not cause burns to the user when the locking mechanism enters the unlocking state.

[0021] Preferably, the data related to the food being processed in the food processor obtained in step S1 includes gear level data or power data, and the preset time t1 changes in response to the heating time data, gear level data, or power data.

[0022] Preferably, step S2 includes: step S21: calculating the temperature change curve of the processed object based on the type of the processed object and in combination with weight data and / or heating time data; step S22: calculating the preset time t1 required for the temperature of the processed object to reach the threshold, comparing the preset time t1 with the placement time t2 of the processed object in the food processor after heating, and determining whether the temperature of the processed object is lower than the threshold.

[0023] According to the above technical solution, the temperature change curve of the processed object is calculated based on relevant data such as the type of the processed object. The temperature change curve can be used to determine the temperature change of the processed object, thereby accurately calculating when the temperature of the processed object will drop to a temperature that is safe for the human body.

[0024] Preferably, the threshold in step S3 is in the range of 40°C to 50°C.

[0025] According to the above technical solution, the threshold of 50°C in step S3 ensures that the locking mechanism will only open when the temperature of the object being processed is below 50°C, thus preventing users from being burned by high temperatures of 50°C or above when they come into contact with the object being processed.

[0026] Preferably, the locking mechanism includes a display screen with a locking indicator, and sending the control command in step S3 also includes changing the display state of the locking indicator.

[0027] According to the above technical solution, when the locking mechanism changes from a locked state to an unlocked state or from an unlocked state to a locked state, the display state of the locking indicator will change, and the user can accurately and clearly understand the locked / unlocked state of the locking mechanism based on the change in the display state of the locking indicator.

[0028] The present invention also provides a control method for a food processor, the control method comprising:

[0029] Step S1: Obtain the heating action setting conditions for the food being processed in the food processor; Step S2: Adjust the unlocking time based on the heating action setting conditions. Attached Figure Description

[0030] Figure 1 This is a perspective view of the locking mechanism according to the first embodiment of the present invention.

[0031] Figure 2 This is an exploded view of the locking mechanism according to the first embodiment of the present invention.

[0032] Figure 3 This is another exploded view of the locking mechanism according to the first embodiment of the present invention.

[0033] Figure 4 This is a perspective view of the lever and electromagnetic switch according to the first embodiment of the present invention.

[0034] Figure 5 This is another perspective view of the lever and electromagnetic switch according to the first embodiment of the present invention.

[0035] Figure 6 This is another perspective view of the locking mechanism according to the first embodiment of the present invention.

[0036] Figure 7 This is a perspective view of the locking mechanism according to the second embodiment of the present invention.

[0037] Figure 8 This is an exploded view of the locking mechanism according to the second embodiment of the present invention.

[0038] Figure 9 This is a front view of the food processor according to the third embodiment of the present invention.

[0039] Figure 10 This is a locking logic diagram of the food processor according to the third embodiment of the present invention.

[0040] Figure 11This is a front view of the display screen according to the third embodiment of the present invention.

[0041] Figure 12 This is a flowchart of the control method for a food processor according to the third embodiment of the present invention.

[0042] Figure 13 This is a flowchart of step S2 of the third embodiment of the present invention.

[0043] Figure 14 This is a temperature change curve of water according to the third embodiment of the present invention.

[0044] Reference numerals: 100 Locking mechanism; 200 Food processor; 1 Panel; 11 Through hole; 12 Front panel; 13 Rear panel; 131 Groove; 2 Lever mounting part; 21 Positioning hole; 3 Lever; 31 Pin; 32 Opening; 33 Protrusion; 34 Force-bearing part; 4 Electromagnetic switch; 41 Push rod; 5 Door opening component; 6 Door hook; 7 Door opening button; 71 Door opening guide post; 8 Control button; 9 Door body; 101 Circuit board; 102 Display screen; 103 Locking mark; P Vertical direction. Detailed Implementation

[0045] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0046] First embodiment

[0047] This invention provides a locking mechanism 100. Figure 1 This is a perspective view of the locking mechanism 100 according to the first embodiment of the present invention. Figure 1 As shown, the locking mechanism 100 includes a panel 1 and a lever mounting portion 2 disposed on the back of the panel 1, the lever mounting portion 2 having a positioning hole 21. In this embodiment, the lever mounting portion 2 is integrally formed with the panel 1. This integral forming ensures a stable connection between the lever mounting portion 2 and the panel 1, and also reduces the number of parts and assembly steps, thereby helping to reduce manufacturing costs. The locking mechanism 100 also includes a lever 3, the lever 3 having a pin 31 that matches the positioning hole 21. The lever 3 is pivotally connected to the positioning hole 21 via the pin 31, allowing the lever 3 to rotate around the pin 31.

[0048] Figure 2 This is an exploded view of the locking mechanism 100 according to the first embodiment of the present invention. Figure 2As shown, the locking mechanism 100 is linked with the door opening component 5 and the door hook 6 that engages with the door opening component 5. The door opening component 5 is used to open the door body 9. Figure 9 (As shown in the diagram). When lever 3 receives pressure from the door opening button 7, it rotates around pin 31. When lever 3 rotates to a certain angle, it triggers door opening component 5, causing the door hook 6, which was originally engaged with door opening component 5, to disengage from door opening component 5, thus completing the door opening action. Here, the opening / closing component 5 and door hook 6 are merely illustrative components; their structure is not particularly limited as long as they can be linked with the locking mechanism 100 to complete the door opening action.

[0049] Figure 3 This is another exploded view of the locking mechanism 100 according to the first embodiment of the present invention. (See diagram below.) Figure 3 As shown, the locking mechanism 100 also includes an opening guide post 71, which is connected to the opening button 7. After the user presses the opening button 7, the opening guide post 71 moves towards the side closer to the lever 3 and engages with the force-bearing part 34 of the lever 3. Figure 4 (As shown in the figure) they are in contact. In this embodiment, there are two door opening guide pillars 71, so that the force applied by the door opening guide pillars 71 to the door opening button 7 is more even, and the lever 3 is prevented from deviating due to uneven force.

[0050] Furthermore, an electromagnetic switch 4 is also installed on the back of panel 1. "Back" refers to the side of panel 1 opposite to the side where the door opening button 7 is located. The electromagnetic switch 4 is fixed to panel 1 by a threaded connection. This threaded connection provides a stable and secure connection and facilitates easy disassembly and assembly. When the electromagnetic switch 4 is damaged, it is easy to disassemble and replace, thus reducing maintenance costs.

[0051] Figure 4 This is a perspective view of the lever 3 and electromagnetic switch 4 according to the first embodiment of the present invention. Figure 4 As shown, specifically, the lever 3 has an opening 32 into which the push rod 41 can be inserted, and the electromagnetic switch 4 has a push rod 41 that can extend and retract in the vertical direction P. The electromagnetic switch 4 has the advantage of easy control. When the electromagnetic switch 4 is energized, it generates magnetism under the action of current, controlling the push rod 41 to insert into the opening 32. When the electromagnetic switch 4 is de-energized, the magnetism disappears, and the push rod 41 retracts into the electromagnetic switch 4 under the action of a reset component (not shown), thereby restoring it to the unlocked state. Figure 4 The push rod 41 of the electromagnetic switch 4 is not extended, and the push rod 41 is away from the opening 32. The electromagnetic switch 4 is in the unlocked state relative to the lever 3. When the locking mechanism 100 is in the unlocked state, the door opening action can be carried out normally.

[0052] Figure 5 This is another perspective view of the lever 3 and electromagnetic switch 4 according to the first embodiment of the present invention. Figure 5As shown, when the electromagnetic switch 4 is in the locked state, the push rod 41 is inserted into the opening 32. When the door opening button 7 is pressed, although the pressing force is transmitted to the lever 3, the contact part between the push rod 41 and the lever 3 provides a reaction force on the lever 3, preventing the lever 3 from being pressed down. When the locking mechanism 100 is in the locked state, the movement of the lever 3 is prevented by the control of the electromagnetic switch 4, so that the door opening component 5 ( Figure 2 (As shown in the image) cannot be triggered by lever 3.

[0053] Thus, by controlling the action of the electromagnetic switch 4, the user can keep the locking mechanism 100 in a locked / unlocked state, preventing children from opening the door 9 at will. The user can also keep the locking mechanism 100 in the unlocked state for a long time according to actual needs, thereby improving the convenience of the unlocking mechanism while ensuring safety.

[0054] In this embodiment, the opening 32 is located at the lower part of the lever 3, allowing the push rod 41 to extend vertically P and then into the opening 32. The pin 31 is located at the upper part of the lever 3. Since the opening 32 at the lower part of the lever 3 is limited by the push rod 41, even if the lever 3 is moved, the lever 3 cannot continue to rotate around the upper pin 31. The simple structure achieves locking of the lever 3, resulting in a good locking effect.

[0055] In this embodiment, the push rod 41 is cylindrical, and the opening 32 is an oblong hole. This allows for a certain amount of slack in the opening 32, achieving a clearance fit between the push rod 41 and the opening 32, preventing the push rod 41 from being too tightly fitted and thus hindering its extension and retraction. In other embodiments of the present invention, the shapes of the push rod 41 and the opening 32 are not limited to cylindrical or oblong; they can also be other shapes, which are not specifically limited here.

[0056] Figure 6 This is another perspective view of the locking mechanism 100 according to the first embodiment of the present invention, as shown below. Figure 6 As shown, a circuit board 101 is also provided on the back of the panel 1, and the circuit board 101 is electrically connected to the electromagnetic switch 4. The circuit board 101 is provided with a control unit (not shown), which can control the operation of the electromagnetic switch 4 according to the user's instructions, or can automatically control the operation of the electromagnetic switch 4 according to preset steps, thereby improving the automation level of the locking mechanism 100 and making it more convenient for the user.

[0057] The locking mechanism 100 in this embodiment has good versatility and high reliability, and can be applied to different types of household appliances to improve security.

[0058] Second embodiment

[0059] The present invention also provides a locking mechanism 100. Figure 7 This is a perspective view of the locking mechanism 100 according to the second embodiment of the present invention. Figure 8 This is an exploded view of the locking mechanism 100 according to the second embodiment of the present invention. Figure 7 as well as Figure 8 As shown, the locking mechanism 100 in this embodiment differs from the locking mechanism 100 in the first embodiment in that the mounting positions and engagement methods of the lever mounting part 2 and the lever 3 are different in this embodiment.

[0060] Furthermore, panel 1 includes a front panel 12 and a rear panel 13 disposed on the back of the front panel 12. Lever mounting portion 2 is disposed on the side of the rear panel 13 near the front panel 12 and is threadedly connected to the rear panel 13. The main body of lever 3 is disposed on the back of the rear panel 13. Pin 31 passes through the slot 131 of the rear panel 13 and pivotally connects to the positioning hole 21. Lever 3 can rotate about pin 31, thereby triggering the door opening component 5. Figure 2 (As shown in the image) Open the door 9.

[0061] Furthermore, a through hole 11 is provided on the rear panel 13. In this embodiment, the lever 3 has a protrusion 33 that can pass through the through hole 11, and the protrusion 33 matches the through hole 11. In this embodiment, the protrusion 33 functions similarly to the force-receiving part 34 in the first embodiment. The protrusion 33 is used to transmit torque. When pressure is applied to the protrusion 33, the protrusion 33 is pressed down. Since the protrusion 33 of the lever 3 is hinged to the lever mounting part 2 through the pin 31, the lever 3 rotates around the pin 31, thereby triggering the door opening component 5. Moreover, this embedded mounting method reduces the space required for the locking mechanism 100, making the electromagnetic switch 4 fit more tightly with the lever 3.

[0062] Third embodiment

[0063] The present invention also provides a control method for a food processor 200. Figure 9 This is a front view of the food processor 200 according to the third embodiment of the present invention, as shown below. Figure 9 As shown, the food processor 200 has a locking mechanism 100 as described in the first or second embodiment.

[0064] In this embodiment, the locking mechanism 100 is installed at the position corresponding to the door opening button 7. When using the food processor 200, the user can choose whether to activate the locking mechanism 100 according to their own needs.

[0065] Furthermore, the food processor 200 is equipped with control buttons 8. Pressing a single control button 8 or a combination of different control buttons 8 triggers the locking mechanism 100, causing the locking mechanism 100 to be in a locked or unlocked state. There is no particular limitation on the way the locking mechanism 100 is triggered. For example, the control buttons 8 may include a start button for starting the food processing operation. When the user presses the start button, the control unit (not shown) receives the corresponding signal and controls the electromagnetic switch 4 via the circuit board 101, thereby locking the locking mechanism 100.

[0066] The food processor 200 uses the aforementioned locking mechanism 100 to lock its door 9. When the push rod 41 is inserted into the opening 32, children cannot open the door 9, reducing the probability of children being burned when opening the food processor 200. Users can also move the push rod 41 away from the opening 32 to freely open the door 9, thereby improving convenience.

[0067] Figure 10 This is a locking logic diagram of the food processor 200 according to the third embodiment of the present invention, as follows: Figure 10 As shown and combined Figure 9 During the period from when the food processor 200 starts cooking until it stops cooking, the locking mechanism 100 remains locked, preventing the user from opening the door 9. When the food processor 200 is not cooking, the locking mechanism 100 remains unlocked, allowing the user to easily open and close the door 9, place food, and perform other operations. This ensures both security and convenience for both the locking mechanism 100 and the food processor 200. Here, "cooking" refers to any food processing, including steam heating or microwave heating.

[0068] Furthermore, the locking mechanism 100 includes a display screen 102 with a locking indicator 103, and the display state of the locking indicator 103 changes accordingly when the locking state / unlocking state of the locking mechanism 100 changes. Figure 11 This is a front view of the display screen 102 according to the first embodiment of the present invention, as shown below. Figure 11 As shown, the display screen 102 is mounted on panel 1 ( Figure 6 The front of the display screen 102 is shown in the diagram. Here, "front" refers to the side opposite to the back. A locking indicator 103 is provided on the display screen 102. In this embodiment, the locking indicator 103 is a key symbol. When the locking mechanism 100 is locked, the key symbol remains constantly lit; when the locking mechanism 100 is unlocked, the key symbol flashes. Based on the constantly lit or flashing state of the key symbol, the user can accurately and clearly understand the locked / unlocked state of the locking mechanism 100.

[0069] In other embodiments of the present invention, the locking indicator 103 is not limited to a key symbol and may be in other forms, and the changing state of the locking indicator 103 is not limited to constant light / blinking. For example, in other embodiments of the present invention, the locking indicator 103 may also be a text symbol. When the locking mechanism 100 is in the locked state, the text symbol displays "LOCK"; when the locking mechanism 100 is in the unlocked state, the text symbol displays "OFF". The display screen 102 allows users to easily observe and judge the locking state of the locking mechanism 100, thereby improving the user experience.

[0070] Figure 12 This is a flowchart of the control method of the food processor 200 according to the third embodiment of the present invention, as follows: Figure 12 As shown, the control method includes steps S1, S2, and S3. First, in step S1, the control unit acquires data related to the food being processed in the food processor 200. The food being processed can be vegetables, meat, milk, water, etc.

[0071] In this embodiment, it is necessary to determine the category of the processed item. Step S1, obtaining data related to the processed item, can be done through user input. For example, the food processor 200 can be equipped with multiple mode buttons for different categories of processed items. After the user presses the mode button corresponding to the processed item, the food processor 200 will know the category of the processed item and heat it according to the appropriate heating method. For example, the food processor 200 is equipped with mode buttons for "vegetables," "meat," and "milk." After the user puts water into the food processor 200 and presses the "water" mode button, the food processor 200 will then process the water according to the appropriate heating method. When the food processor 200 starts heating, the control unit controls the electromagnetic switch 4 to insert the push rod 41 into the opening ( Figure 3 (As shown in the diagram), this locks the locking mechanism 100 in a locked state, preventing the door 9 from being opened. Figure 9 (As shown in the diagram). After heating is complete, the locking mechanism 100 remains locked until step S3.

[0072] In addition, users can directly set the heating time and / or power without specifying the type of object to be processed. In this case, the control unit will process the object according to the general processing settings.

[0073] In other embodiments of the present invention, the category of the object to be processed is not limited to a user-defined method, but may also be determined by other methods, which are not specifically limited here.

[0074] In this embodiment, the data related to the processed object also includes acquiring its weight data and heating time data. The weight data can be obtained by installing a weight sensor in the food processor 200, which detects the weight of the object and sends the detected weight data to the control unit. The heating time data can be determined by the heating time corresponding to the mode button, or by a heating time set by the user.

[0075] In other embodiments of the present invention, the method of obtaining weight data and heating data is not limited to the method described above, and may also be other methods. Furthermore, the data related to the processed object is not limited to weight data and heating time data, and may also be other data, which are not specifically limited here.

[0076] After step S1 is completed, proceed to step S2. Figure 13 This is a flowchart of step S2 in the third embodiment of the present invention, as follows: Figure 13 As shown, in step S2, the temperature change curve of the processed object is calculated based on the data. Specifically, step S2 includes steps S21 and S22.

[0077] In step S21, the control unit calculates the temperature change curve of the processed object based on the type of the processed object and in combination with weight data and heating time data.

[0078] For example, when the user presses the "Water" mode button, the food processor 200 not only heats the food according to the water heating method, but also performs calculations based on the water temperature change curve. Since the data obtained in step S1 also includes the weight data of the food being processed and the heating time data, the weight of the water and the initial temperature after heating can be determined.

[0079] Figure 14 This is a water temperature change curve diagram according to the third embodiment of the present invention, such as... Figure 14 As shown, Figure 14 This includes the temperature changes of different volumes of water (volume represents weight). Actual experiments showed that it takes approximately 7 minutes for 100 mL (0.1 kg) of water to cool from 100℃ to 50℃, approximately 40 minutes for 500 mL (0.5 kg) of water, and approximately 53 minutes for 1000 mL (1 kg) of water. Several such data points were collected during the actual experiments, and a data set was created based on these data points. Figure 14 The fitted curve of the temperature change shown can be used to accurately determine the temperature change.

[0080] In this embodiment, the control unit has preset temperature change curves for different types of processed materials, which can distinguish the temperature changes of different types of processed materials under different weight states.

[0081] If the control unit does not have a preset temperature change curve for a certain weight of the object to be processed, the calculation will be based on the closest preset weight data that is greater than that weight. For example, if the weight sensor detects that the object to be processed is 0.97 kg, and the preset temperature change curves include temperature change curves for the object at 0.9 kg and 1 kg, then the analysis and calculation will be performed based on the temperature change curve for the object at 1 kg.

[0082] After step S21 is completed, proceed to step S22. In step S22, based on the temperature change curve of the processed object obtained in step S21, calculate the preset time t1 required for the temperature of the processed object to reach the threshold. The standard for setting the preset time t1 is that it will not cause harm to the human body when the temperature of the processed object is below the threshold. The threshold is preferably around 50°C.

[0083] The preset time t1 is compared with the time t2 after the food is heated and placed in the food processor 200. If the time t2 is less than or equal to the preset time t1, it is determined that the temperature of the food is not lower than the threshold; if the time t2 is greater than the preset time t1, it is determined that the temperature of the food is lower than the threshold, and then proceed to step S3.

[0084] In step S3, since the predicted temperature of the object being processed, calculated in step S22, is already below the predetermined threshold, the temperature of the object will not cause harm to humans. The control unit sends a control command, causing the electromagnetic switch 4 push rod 41 in the locking mechanism 100 to move away from the opening of the lever, and the locking mechanism 100 enters the unlocked state. This ensures safety while achieving unlocking of the locking mechanism 100 in a more automated and intelligent manner, effectively improving user convenience.

[0085] In this embodiment, as described above, the threshold temperature in step S3 is preferably 50°C, which will not cause burns to the human body and is suitable for this usage scenario. In other embodiments of the present invention, the threshold temperature is not limited to 50°C and may be other temperatures, such as temperatures in the range of 40°C to 50°C, which are not specifically limited here.

[0086]

[0087] Table 1

[0088] In this embodiment, the data obtained in step S1 also includes the food processor's speed setting or power data.

[0089] Table 1 lists the temperature changes of water under four different heating powers. It should be noted that the amount of water being treated is 1L. It can be seen that the higher the heating power (i.e., the higher the power value), the easier it is for the water temperature to rise, and the longer it takes to drop to 50℃.

[0090] For the same heating power, for example, 500W, after two cycles of 60 minutes of heating, the water temperature is 87℃. After one cycle of 30 minutes of heating, the water temperature is 82.4℃. The former takes 38 minutes and 54 seconds to drop to 50℃, while the latter takes 36 minutes and 8 seconds. This shows that, under the same conditions, the longer the heating time, the longer it takes to drop to 50℃.

[0091] Therefore, the preset time t1 required for the temperature of the object to drop to a temperature safe for the human body varies in response to heating time data, gear data, or power data, thereby ensuring safety and preventing burns.

[0092] Furthermore, based on the relationship of the time (in seconds) required to cool to 50°C, the following formula can be used for calculation:

[0093] t = P * 0.04 + L * 90 + 2000

[0094] Where P represents heating power, such as 1250w, 800w, 400w, or 300w. L represents the power level, such as 10 levels, 8 levels, 4 levels, or 3 levels.

[0095] The time calculated using this formula will be compared with the time in Table 1 below:

[0096] At 10 gears and 1250W, t = 1250 x 0.04 + 10 x 90 + 2000 = 50 + 900 + 2000 = 2950 (2952 in Table 1);

[0097] At 4 gear and 400W, t = 400 x 0.04 + 4 x 90 + 2000 = 16 + 360 + 2000 = 2376 (2518 in Table 1);

[0098] At gear 3 and 300W, t = 300 x 0.04 + 3 x 90 + 2000 = 12 + 270 + 2000 = 2282 (2334 in Table 1);

[0099] Therefore, the data calculated using this formula matches the actual experimental data. Applying this formula to the calculation of a preset time t1 can quickly and conveniently yield accurate results. The above lists the calculation formula for water; other types of substances to be treated can also have their temperature changes calculated using corresponding formulas, which will not be listed here.

[0100] Fourth embodiment

[0101] This embodiment provides a control method for a food processor, applied to a food processor 200. The food processor 200 includes a door opening button 7. When the locking mechanism 100 is in the unlocked state, the user can open the door 9 of the food processor 200 by pressing the door opening button 7; when the locking mechanism 100 is in the locked state, the user cannot open the door 9 even if they press the door opening button 7. The parts that are the same as in the third embodiment will not be described again.

[0102] In this embodiment, the user can directly adjust the unlocking time (the time the locking mechanism remains in the unlocked state) by setting the heating action settings.

[0103] More specifically, the control method includes: Step S1: Obtaining the heating action setting conditions for the food being processed in the food processor; Step S2: Adjusting the unlocking time based on the heating action setting conditions.

[0104] In this embodiment, the heating action setting condition can be power data, and in step S2, it is adjusted so that the unlocking time increases as the power data increases. Alternatively, the heating action setting condition can be heating time, and in step S2, it is adjusted so that the unlocking time increases as the heating time increases.

[0105] When the unlocking time is reached, it can be assumed that the temperature of the object to be processed has dropped to, for example, below 50°C. At this time, the control unit sends a control command, causing the electromagnetic switch 4 push rod 41 in the locking mechanism 100 to move away from the opening of the lever. Figure 3 As shown in the diagram, the locking mechanism 100 enters the unlocked state. Of course, depending on actual needs, it can also be unlocked using a combination of buttons during the safe period, allowing food to be removed even during this time. Specifically, the buttons include, for example, a "variable frequency defrost" button, a "stop / reset" button, and a "start" button. The locking mechanism 100 can be unlocked by sequentially pressing the "variable frequency defrost" button, the "stop / reset" button, and the "start" button within a predetermined time range.

[0106] Based on the data in Table 1 and supplemented with relevant data on heating time, the following Table 2 can be compiled.

[0107] Power data Heating time Unlock time 1250w 7min54s 49min12s 800w 20min4s 44min56s 400w 60min 39min28s 400w 90min 41min58s 300w 30min 36min08s 300w 60min 38min54s

[0108] Table 2. Correspondence between unlocking time and power data, heating time

[0109] As described above, in this embodiment, there is no need to calculate the temperature change curve; the unlocking time can be set directly based on power data or heating time data. This is efficient and ensures that regardless of the type or weight of the food being processed, it will not cause burns to a person within the safe time t3. When the user is processing the food using the food processor 200, the locking mechanism 100 is in a locked state, thereby preventing the user or children from accidentally opening the door 9 and causing burns. In this embodiment, the locking mechanism 100 can automatically enter the unlocked state after processing is completed; the time required for this process is the unlocking time. When the unlocking time is reached, the temperature of the food being processed inside the food processor 200 will no longer cause burns. Therefore, the locking mechanism 100, which automatically unlocks upon reaching the unlocking time, improves convenience while ensuring safety.

[0110] As can be seen from the data in Table 2, the higher the power value, the longer the unlocking time. When the power values ​​are the same, the longer the heating time, the longer the unlocking time.

[0111] Those skilled in the art will understand that specific technical features in various embodiments can be adaptively split or combined. Such splitting or combining of specific technical features will not cause the technical solution to deviate from the principles of the present invention; therefore, the technical solutions after splitting or combining will all fall within the protection scope of the present invention. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0112] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A control method for a food processor, characterized in that, The food processor includes a locking mechanism, which comprises: a lever mounting part disposed on the back of the panel and having a positioning hole; A lever, disposed on the back of the panel and having a pin pivotally connected to the positioning hole; An electromagnetic switch, located on the back of the panel, is capable of being locked or unlocked relative to the lever; The electromagnetic switch has a push rod that can extend and retract in a vertical direction, and the lever has an opening that allows the push rod to be inserted therein. The opening is located at the lower part of the lever. The control method includes: Step S1: Obtain data related to the food being processed in the food processor; Step S2: Calculate the temperature change curve of the processed object based on the data; Step S3: When the temperature of the object being processed, calculated in step S2, is lower than a predetermined threshold, a control command is sent to move the electromagnetic switch push rod in the locking mechanism away from the opening of the lever. In step S1, which involves acquiring data related to the food being processed in the food processor, the data related to the food being processed in the food processor includes heating time data, speed data, or power data. The preset time t1 required for the temperature of the food being processed to drop to a threshold varies according to the heating time data, the speed data, or the power data.

2. The control method for the food processor according to claim 1, characterized in that, The lever mounting part is integrally formed with the panel.

3. The control method for the food processor according to claim 1, characterized in that, When in the locked state, the push rod is inserted into the opening; when in the unlocked state, the push rod is moved away from the opening.

4. The control method for the food processor according to claim 1, characterized in that, The pin is located at the upper part of the lever.

5. The control method for the food processor according to any one of claims 1-4, characterized in that, The panel includes a front panel and a rear panel, with a through hole provided on the rear panel, and the lever also has a protrusion that can pass through the through hole.

6. The control method for the food processor as described in claim 1, characterized in that, Step S1 involves acquiring data related to the food being processed in the food processor, including acquiring the weight data of the food being processed and / or the heating time data.

7. The control method for the food processor as described in claim 6, characterized in that, Step S2 includes: Step S21: Calculate the temperature change curve of the processed object based on its category and in combination with weight data and / or heating time data; Step S22: Calculate the preset time t1 required for the temperature of the processed object to reach the threshold, compare the preset time t1 with the time t2 after the processed object is heated and placed in the food processor, and determine whether the temperature of the processed object is lower than the threshold.

8. The control method for the food processor as described in claim 1, characterized in that, The threshold value mentioned in step S3 is in the range of 40°C to 50°C.

9. The control method for the food processor as described in claim 1, characterized in that, The locking mechanism includes a display screen with a locking indicator, and sending a control command in step S3 also includes changing the display state of the locking indicator.

10. The control method for the food processor as described in claim 1, characterized in that, Also includes: The heating action setting conditions of the food being processed in the food processor are obtained from step S1, and the unlocking time is adjusted based on the heating action setting conditions.

11. The control method for the food processor as described in claim 10, characterized in that, The heating action setting condition is power data, and the unlocking time is adjusted to increase as the power data increases.

12. The control method for the food processor as described in claim 10, characterized in that, The heating action setting condition is the heating time, and the unlocking time is adjusted to increase as the heating time increases.

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