Microwave oven capable of preventing food from splashing and control method of microwave oven

Abstract

The invention relates to the technical field of microwave ovens, and discloses a microwave oven capable of preventing food sputtering and a control method thereof.The microwave oven comprises a machine body, an anti-sputtering cover, a telescopic rod and a controller, a containing cavity is formed in the machine body, and the anti-sputtering cover and the telescopic rod are both arranged in the containing cavity; the telescopic rod can stretch out and draw back in the height direction of the containing cavity, one end of the telescopic rod is connected with the top wall of the containing cavity, the other end of the telescopic rod is connected with the anti-sputtering cover, the controller is electrically connected with the telescopic rod, and the controller is used for controlling the telescopic rod to stretch out and draw back so as to drive the anti-sputtering cover to move to a preset position. According to the microwave oven capable of preventing the food from splashing and the control method of the microwave oven, through intelligent linkage of the anti-splashing cover and the telescopic rod and real-time dynamic adjustment of the controller, the food is effectively prevented from being heated and splashed, the cleaning difficulty is reduced, and the applicability, the intelligent level and the user experience of equipment are remarkably improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of microwave ovens, in particular to a microwave oven capable of preventing food splashing and a control method thereof. BACKGROUND

[0002] During the cooking process using a microwave oven, food often splashes due to internal heating. Once the food splashes on the inner wall of the microwave oven, it is difficult to clean. At present, users only rely on self-adding plastic wrap on the cooking utensils to prevent splashing. However, some plastic wraps are not suitable for use in microwave ovens, and the self-adding plastic wrap by users may not be suitable for microwave ovens, which may cause food safety or safety problems.

[0003] Therefore, how to prevent internal food splashing in a microwave oven is a technical problem to be solved. SUMMARY

[0004] In view of the above problems of the prior art, the present application aims to solve the technical problem of how to prevent internal food splashing in a microwave oven.

[0005] To solve the above problems, the present application provides a microwave oven capable of preventing food splashing and a control method thereof, which comprises a body, a food splashing prevention cover, an extension rod and a controller. The body is internally provided with a containing cavity. The food splashing prevention cover and the extension rod are arranged in the containing cavity. The extension rod can be extended and retracted along the height direction of the containing cavity. One end of the extension rod is connected with the top wall of the containing cavity, and the other end is connected with the food splashing prevention cover. The controller is electrically connected with the extension rod, and is used to control the extension rod to extend and retract so as to drive the food splashing prevention cover to move to a preset position.

[0006] Preferably, the food splashing prevention cover comprises at least three annular segments. The inner diameter of each annular segment increases in a stepped manner along the direction away from the extension rod, so as to form a ladder-shaped folding structure. The food splashing prevention cover is in a concentric nested structure in the folded state.

[0007] Preferably, the annular segments are connected with each other through flexible connecting parts. The flexible connecting parts are silicone wrinkle rings with a thickness of 0.5-1 mm and a wrinkle angle in the range of 115°-125°.

[0008] Preferably, the number of the extension rods is multiple. The multiple extension rods are arranged in sequence and at intervals to form a ring-shaped arrangement.

[0009] Preferably, the food splashing prevention cover comprises a polytetrafluoroethylene outer layer and a glass fiber mesh inner layer to form a composite protection structure. The pore size of the glass fiber mesh is in the range of 0.4-0.6 mm.

[0010] Preferably, the microwave oven further includes a height detection device electrically connected to the controller. The height detection device is disposed on the side wall of the receiving cavity and is used to detect the height of the food and generate height information. The controller can control the splash guard to move to the preset position based on the height information. And / or, the splash guard is provided with a distance detection device electrically connected to the controller. The distance detection device is located at the bottom of the splash guard to detect the height of the bottom of the splash guard relative to the food and generate distance information. The controller can control the splash guard to move to the preset position based on the distance information.

[0011] Preferably, the microwave oven further includes a turbidity detection device disposed in the receiving cavity, the turbidity detection device being used to detect the turbidity in the receiving cavity and generate turbidity information, and the controller being able to re-control the movement of the splash guard if the turbidity information is greater than a preset turbidity information; And / or, the microwave oven further includes a temperature detection element disposed in the receiving cavity, the temperature detection element being used to detect the temperature in the receiving cavity and generate temperature change information, and the controller being able to re-control the movement of the splash shield if the temperature change information is greater than a preset temperature change information.

[0012] A control method for a microwave oven designed to prevent food splashing, comprising using any of the microwave ovens described above, wherein the control method is applied to a controller, and the control method includes: Acquire food height information and preset programs; Based on the food height information and the preset program, control the telescopic rod to move the splash shield to the preset position; Start the microwave oven.

[0013] Preferably, the microwave oven further includes a height detection device disposed inside the microwave oven, and the step of controlling the telescopic rod to move the splash guard to a preset position based on the food height information and the preset program includes: When the deviation between the actual height detected by the height detection device and the theoretical height is greater than a preset height deviation threshold, a first target spacing is generated; the first target spacing represents the sum of the first original spacing and the first compensation spacing of the preset program; the first compensation spacing is the product of the attenuation coefficient and the difference between the actual height and the theoretical height; Based on the first target distance, the telescopic rod is controlled to move the splash shield to the first target position.

[0014] Preferably, the microwave oven further includes a turbidity detection element disposed within the microwave oven, and after the microwave oven is started, the following is also included: Obtain the actual turbidity information sent by the turbidity detection device; If the deviation between the actual turbidity information and the theoretical turbidity information is greater than a preset turbidity deviation threshold, a second target position is generated; the second target position represents the sum of the second original interval and the second compensation interval of the preset program; the second compensation interval is the product of an increase coefficient and the difference between the actual turbidity and the theoretical turbidity. Based on the second target distance, control the telescopic rod to move the splash shield to the second target position; And / or, the microwave oven further includes a temperature detection element disposed in the microwave oven, and after the microwave oven is started, it further includes: Obtain the actual temperature information sent by the temperature detection device; If the deviation between the actual temperature information and the theoretical temperature information is greater than a preset temperature deviation threshold, a third target position is generated; the third target position represents the sum of the third original spacing and the third compensation spacing of the preset program; the third compensation spacing is the product of an increase coefficient and the difference between the actual temperature and the theoretical temperature. Based on the distance to the third target, the telescopic rod is controlled to move the splash shield to the position of the third target.

[0015] Based on the above technical solution, the microwave oven and its control method for preventing food splashing described in this application have the following beneficial effects: First, the splash guard effectively covers the food, preventing it from splashing during microwave heating due to internal thermal expansion. This avoids food residue adhering to the inner wall of the microwave oven, significantly reducing cleaning difficulty and improving the user experience. Secondly, the flexible telescopic design of the telescopic rod allows the splash guard to be precisely adjusted according to the actual height and shape of the food, ensuring maximum coverage while avoiding pressure on the food or wasting space, thus improving the applicability and intelligence of the microwave oven. In addition, the introduction of the controller enables automated control of the splash guard, which can monitor the food status and cooking environment in real time, dynamically adjust the position of the splash guard, and further optimize the protective effect.

[0016] In summary, the microwave oven and its control method for preventing food splashing described in this application effectively prevent food from splashing during heating and reduce cleaning difficulty by intelligently linking the splash shield and the telescopic rod, combined with the real-time dynamic adjustment of the controller. This significantly improves the applicability, intelligence level, and user experience of the equipment. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of this application, the accompanying drawings used in the description of the embodiments or prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of the microwave oven anti-splash cover in a folded state from a first-view perspective, provided in an embodiment of this application.

[0019] Figure 2 This is a schematic diagram of the microwave oven anti-splash cover in a folded state from a second perspective, provided in an embodiment of this application.

[0020] Figure 3 This is a schematic diagram of the structure of the microwave oven with the anti-splash cover in the unfolded state, as provided in the embodiment of this application.

[0021] Figure 4 This is a schematic diagram of the anti-splash shield provided in this application embodiment in its deployed state.

[0022] Figure 5 This is a flowchart of the control method for a microwave oven that prevents food splashing, provided in an embodiment of this application.

[0023] The following are the annotations for the attached drawings: 100, microwave oven; 11, body; 12, housing cavity; 13, splash guard; 131, first section; 132, second section; 133, third section; 14, telescopic rod. Detailed Implementation

[0024] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0025] The term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of this application. In the description of this application, it should be understood that the terms "upper," "lower," "left," "right," "top," "bottom," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Moreover, the terms "first," "second," etc., are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein.

[0026] like Figures 1-5 As shown in the figure, this application discloses a microwave oven 100 for preventing food splashing, which includes a body 11, a splash shield 13, a telescopic rod 14, and a controller. The body 11 has a receiving cavity 12 inside. The splash shield 13 and the telescopic rod 14 are both disposed in the receiving cavity 12. The telescopic rod 14 can extend and retract along the height direction of the receiving cavity 12. One end of the telescopic rod 14 is connected to the top wall of the receiving cavity 12, and the other end is connected to the splash shield 13. The controller is electrically connected to the telescopic rod 14. The controller is used to control the extension and retraction of the telescopic rod 14 to move the splash shield 13 to a preset position.

[0027] In this embodiment, the controller can control the telescopic rod 14 to move the splash guard 13 to different heights based on different preset programs of the microwave oven 100.

[0028] For example, if the user selects the preset program of "Thick Soup Mode", the controller can control the telescopic rod 14 to extend and retract, and drive the anti-splash cover 13 to descend to a distance of 5-10mm from the food surface; if the user selects the preset program of "Pasta Reheating Mode", the controller can control the telescopic rod 14 to extend and retract, and drive the anti-splash cover 13 to descend to a distance of 15-20mm from the food surface; if the user selects the preset program of "Fried Food Heating Mode", the controller can control the telescopic rod 14 to extend and retract, and drive the anti-splash cover 13 to descend to a distance of 10-15mm from the food surface. In this embodiment of the application, the controller can also control the speed at which the telescopic rod 14 drives the splash shield 13 to descend. For example, the speed during the acceleration phase is 20 mm / s, and the moving distance is 0-5 mm; the speed during the constant speed phase is 10 mm / s, and the descent is normal; the speed during the deceleration phase is 5 mm / s, and the distance to the preset position is within 10 mm. The purpose of this setting is to avoid the waste of space or the compression of food caused by the traditional fixed stroke.

[0029] It is understood that the cavity 12 is a microwave cavity used to heat food.

[0030] It is understood that the telescopic rod 14 extends along the height direction of the receiving cavity 12.

[0031] In this embodiment of the application, a drive motor is provided in the receiving cavity 12, and the drive motor is connected to the telescopic rod 14 to drive the telescopic rod 14 to move the splash shield 13 vertically up and down.

[0032] Preferably, the surface of the telescopic rod 14 is coated with a molybdenum disulfide lubricating layer, and a built-in Hall sensor monitors its displacement in real time.

[0033] Therefore, adopting the above structural form has at least the following technical effects: First, the anti-splash cover 13 can effectively cover the food and prevent it from splashing due to internal thermal expansion during microwave heating. This avoids food residue adhering to the inner wall of the microwave oven 100, significantly reducing cleaning difficulty and improving the user experience. Secondly, the flexible telescopic design of the telescopic rod 14 allows the splash guard 13 to be precisely adjusted according to the actual height and shape of the food, ensuring maximum coverage while avoiding pressure on the food or wasting space, thus improving the applicability and intelligence level of the microwave oven 100. In addition, the introduction of the controller enables automated control of the splash shield 13, which can monitor the food status and cooking environment in real time, dynamically adjust the position of the splash shield 13, and further optimize the protective effect.

[0034] In summary, the microwave oven 100 and its control method for preventing food splashing described in this application, through the intelligent linkage between the anti-splash cover 13 and the telescopic rod 14, combined with the real-time dynamic adjustment of the controller, effectively prevents food from splashing during heating, reduces the difficulty of cleaning, and significantly improves the applicability, intelligence level and user experience of the equipment.

[0035] like Figures 3-4 As shown, the splash shield 13 includes at least three annular segments, and the inner diameter of each annular segment increases in a stepped manner along the direction away from the telescopic rod 14 to form a trapezoidal folding structure. The splash shield 13 has a concentric nested structure in the folded state.

[0036] In this embodiment, the splash guard 13 includes a first segment 131, a second segment 132, and a third segment 133 connected sequentially along its axial direction. The inner diameter D1 of the first segment 131 is between 120-150 mm, the inner diameter D2 of the second segment 132 is between 150-180 mm, and the inner diameter D3 of the third segment 133 is between 180-210 mm. The relationship between the inner diameter differences of adjacent segments is: ΔD = 0.2 × h + 10 mm, where h is the height of the annular segment, ensuring no interference during folding.

[0037] In this embodiment of the application, the height h of each segment of the splash guard 13 is between 50 and 80 mm.

[0038] In this embodiment, the cross-sectional dimensions of the splash shield 13 and the accommodating cavity 12 are adapted to each other. Specifically, along the extension and retraction direction perpendicular to the telescopic rod 14, the cross-sectional dimensions of the third segment 133 of the splash shield 13 are adapted to the cross-sectional dimensions of the accommodating cavity 12, so as to fully cover the food to prevent oil splashes.

[0039] In this embodiment of the application, each of the annular segments of the splash shield 13 is inclined, and the inclination angle α of each annular segment satisfies: α=arctan[(Dn+1-Dn) / 2h], where n is the segment number.

[0040] In this embodiment of the application, the ratio of the height H of the splash shield 13 after folding to the height H' after unfolding satisfies: H / H'≤0.35.

[0041] In this embodiment, the annular segments are connected by flexible connecting parts, which are silicone corrugated rings with a thickness of 0.5-1mm and a corrugation angle between 115° and 125°. This ensures sufficient flexibility and elasticity while also possessing good mechanical strength, enabling a smooth transition during the unfolding and folding of the splash guard 13. This avoids stress concentration or structural damage caused by rigid connections, thereby extending the service life of the device. Furthermore, the corrugation angle of 115°-125° ensures structural compactness while providing sufficient extension and retraction for the annular segments. This allows the splash guard 13 to fully cover food when unfolded and achieve efficient nesting when folded, maximizing the use of the microwave oven 100's internal space and improving space utilization.

[0042] Therefore, the trapezoidal folding structure design allows the splash guard 13 to form a large coverage area when unfolded, effectively wrapping food of different sizes and shapes, thus comprehensively preventing food splashing during microwave heating, significantly reducing the risk of contamination on the inner wall of the microwave oven 100, and improving cleaning convenience and user experience. Furthermore, the concentric nested folding method minimizes the space occupied by the splash guard 13 when retracted, avoiding waste of the effective cooking space inside the microwave oven 100, and not affecting the normal operation of other components, thus improving the internal space utilization and structural compactness of the microwave oven 100. In addition, the trapezoidal increasing ring segment design enhances the structural strength and stability of the splash guard 13, making it less prone to deformation in high-temperature or steam environments, and able to withstand food expansion or external impacts, extending the lifespan of the device. Simultaneously, this structural design facilitates smooth extension and retraction, reducing friction or jamming during movement, and improving the operational stability and reliability of the device.

[0043] In a preferred embodiment, there are multiple telescopic rods 14, which are arranged in a ring at intervals.

[0044] By employing multiple telescopic rods 14 arranged in a ring, a uniform and stable support force can be provided for the splash shield 13, ensuring that the splash shield 13 remains horizontal during the lifting and lowering process and will not tilt or shift due to uneven force at a single point. This ensures that its coverage effect on food is always consistent, improving the reliability and consistency of protection. Furthermore, the ring-arranged telescopic rods 14 can enhance the mechanical strength and deformation resistance of the overall structure. Especially when the splash shield 13 is subjected to high temperature or food expansion impact, multi-point support can effectively disperse external forces, avoid local overload or damage, and extend the service life of the device.

[0045] In this embodiment, the telescopic rods 14 are arranged in a ring on each annular segment. Therefore, during the folding process of the splash shield 13, the third segment 133 folds upward along the flexible connection to the outer periphery of the second segment 132. Similarly, the second segment 132 concentrically folds inward to form a concentric nest, ultimately forming a three-layer annular stacked structure. The height of the splash shield 13 after folding is compressed by more than 65% relative to its total height before folding.

[0046] Preferably, four carbon fiber telescopic rods 14 are arranged in a ring.

[0047] In a preferred embodiment, the splash shield 13 includes a polytetrafluoroethylene outer layer and a glass fiber mesh inner layer to form a composite protective structure; The pore size of the glass fiber mesh is in the range of 0.4-0.6 mm.

[0048] Understandably, the polytetrafluoroethylene (PTFE) outer layer has excellent high-temperature resistance and strong chemical inertness, which can effectively prevent food from adhering to the surface of the microwave oven due to high-temperature sputtering during microwave heating. At the same time, it has good non-stick properties, making it easy to clean, which significantly improves the user experience and the hygiene of the microwave oven.

[0049] Furthermore, the inner layer of glass fiber mesh is used as a support structure, and its pore size is designed between 0.4-0.6mm. This effectively blocks food residue and liquid splashes while allowing microwaves to penetrate, ensuring that food is heated evenly and avoiding the impact on cooking results due to excessive microwave blockage. In addition, this pore size range can also release steam to a certain extent, preventing excessive pressure caused by steam accumulation from causing boiling or splashing, further enhancing the safety of the cooking process.

[0050] Meanwhile, the composite protective structure design combines the high temperature resistance and non-stick properties of the PTFE outer layer with the mechanical strength and breathability of the glass fiber mesh inner layer, enabling the splash shield 13 to maintain structural stability in high temperature environments, making it less prone to deformation or damage and extending the service life of the device.

[0051] In a preferred embodiment, the microwave oven 100 further includes a height detection device electrically connected to the controller. The height detection device is disposed on the side wall of the receiving cavity 12 and is used to detect the height of the food and generate height information. The controller can control the splash guard 13 to move to the preset position based on the height information.

[0052] In this embodiment, the height detection element can be an infrared sensor or an ultrasonic sensor to detect the height of the food in the receiving cavity 12 in real time and transmit this information to the controller. The controller automatically calculates the optimal coverage position of the splash guard 13 based on the height information, thereby controlling the telescopic rod 14 to move the splash guard 13 to the preset position. This process eliminates the need for manual adjustment by the user, significantly improving the convenience and intelligence of operation. It is particularly suitable for various foods of different sizes, shapes, and heights, providing a more user-friendly experience. Furthermore, the controller can achieve precise control based on the height information, avoiding excessive extension or ineffective movement of the splash guard 13. This not only extends the service life of mechanical components such as the telescopic rod 14 but also reduces energy consumption. Furthermore, by accurately detecting the height of the food and automatically adjusting the position of the anti-splash cover 13, it can be ensured that the anti-splash cover 13 is always at the optimal coverage distance. It will not lose its protective effect due to being too far away, nor will it come into contact with the food surface due to being too close. This intelligent adjustment mechanism can prevent food from splashing during heating due to boiling, expansion or bursting, thereby effectively reducing the contamination of the inner wall of the microwave oven 100, reducing the cleaning frequency, and improving the overall safety and hygiene of the equipment.

[0053] In a preferred embodiment, the splash shield 13 is provided with a distance detection device electrically connected to the controller. The distance detection device is located at the bottom of the splash shield 13 to detect the height of the bottom of the splash shield 13 relative to the food and generate distance information. The controller can control the splash shield 13 to move to the preset position based on the distance information.

[0054] In this embodiment, there are multiple distance detection elements, which are arrayed at the bottom of the splash shield 13, for example, 4-6 elements.

[0055] In this embodiment of the application, the distance detection device is an ultrasonic sensor array, which includes three probes distributed at 120°.

[0056] In this embodiment, the distance detection device can monitor the vertical distance between the splash shield 13 and the food surface in real time and feed this distance information back to the controller. The controller dynamically adjusts the extension / retraction of the telescopic rod 14 according to a set safe distance threshold (e.g., 20-50mm) to ensure the splash shield 13 is always at the optimal protective height. Furthermore, by continuously monitoring the distance between the splash shield 13 and the food, the controller can automatically adjust its position when the distance is too close, preventing the splash shield 13 from contacting the food surface and avoiding the risk of food contamination or burns. In addition, when the food expands due to heating or the liquid boils, causing a change in height, the distance detection device can quickly respond and adjust the position of the splash shield 13, ensuring protective effectiveness while improving safety.

[0057] In a preferred embodiment, the microwave oven 100 further includes a turbidity detection element disposed in the receiving cavity 12. The turbidity detection element is used to detect the turbidity in the receiving cavity 12 and generate turbidity information. The controller can re-control the movement of the splash shield 13 if the turbidity information is greater than the preset turbidity information.

[0058] In this embodiment of the application, the turbidity detection device can estimate the change in turbidity by monitoring parameters such as vapor release rate, humidity change, and temperature gradient. For example, it can be combined with data from humidity sensors, thermal imaging modules, etc., to indirectly realize the monitoring and response to turbidity changes.

[0059] In this embodiment, the turbidity detection device can employ optical sensors, laser scattering sensors, or image recognition modules to monitor real-time changes in turbidity inside the containment cavity 12, such as changes in air turbidity caused by food boiling, liquid splashing, or grease evaporation. When the turbidity exceeds a preset threshold, the controller determines that the current position of the splash shield 13 can no longer effectively suppress splashing, and automatically adjusts the height or position of the splash shield 13 to make it closer to the food surface or expand the coverage area, thereby enhancing the protective effect. This dynamic adjustment mechanism based on turbidity feedback significantly improves the adaptability and protective accuracy of the splash shield 13. Furthermore, the turbidity detection device can also detect changes in the internal environment of the containment cavity 12 before splashing becomes severe, such as liquids starting to boil violently or grease starting to splash. By adjusting the position of the splash shield 13 in time, the controller can proactively intervene before the problem escalates, preventing a large amount of food residue or grease from adhering to the inner wall of the microwave oven 100, thereby significantly reducing the difficulty and frequency of subsequent cleaning and improving the user experience.

[0060] In a preferred embodiment, the microwave oven 100 further includes a temperature detection element disposed in the receiving cavity 12. The temperature detection element is used to detect the temperature in the receiving cavity 12 and generate temperature change information. The controller can re-control the movement of the splash shield 13 when the temperature change information is greater than a preset temperature change information.

[0061] In this embodiment, the temperature detection device can be a thermocouple, an infrared temperature sensor, or a thermistor to monitor temperature changes within the containment cavity 12 in real time, especially during food heating, when the temperature may rise rapidly due to boiling, evaporation, or localized microwave heating. When the temperature change exceeds a preset threshold, for example, if the temperature detection device detects a temperature change rate exceeding 5°C / s within the containment cavity 12, the controller determines that the current position of the splash shield 13 may not effectively suppress high-temperature splashing or hot steam overflow. It then automatically adjusts the height or position of the splash shield 13 to bring it closer to the food surface or expand its coverage area, thereby enhancing the protective effect. This dynamic adjustment mechanism based on temperature feedback significantly improves the safety and protective accuracy of the splash shield 13. Furthermore, the temperature detection device can also detect the high-temperature risk inside the containment cavity 12 in advance when the temperature rises sharply, such as when liquids begin to boil violently or grease begins to splatter. By adjusting the position of the anti-splash cover 13 in a timely manner, the controller can proactively intervene before high-temperature splashing or hot steam overflows, preventing users from being burned when opening the microwave oven 100 door. At the same time, it prevents high-temperature food residue or grease from adhering to the inner wall of the microwave oven 100, thereby protecting the equipment from high-temperature damage and extending its service life.

[0062] like Figure 5As shown in the embodiments of this application, a control method for a microwave oven 100 designed to prevent food splashing is also disclosed. This method utilizes the microwave oven 100 described above, and the control method is applied to a controller. The control method includes: S101. Obtain food height information and preset programs; S103. Based on the food height information and the preset program, control the telescopic rod 14 to move the splash shield 13 to the preset position; S105. Start the microwave oven 100.

[0063] Understandably, in step S101, by acquiring food height information and combining it with preset programs (such as food type, heating mode, power setting, etc.), the controller can automatically calculate the optimal position of the splash guard 13 and precisely move it to that position using the telescopic rod 14. Users do not need to manually adjust or estimate the height of the splash guard 13, greatly simplifying the operation process and improving the user experience.

[0064] Understandably, in step S101, different foods exhibit significantly different splashing characteristics during heating. For example, liquid foods (such as soup and porridge) are prone to boiling and splashing, oily foods (such as fried foods and meats) are prone to producing high-temperature oil mist, while solid foods (such as bread and rice) are relatively stable. Through a preset program, the controller can intelligently adjust the height and coverage of the anti-splash cover 13 according to the food type and heating mode, ensuring optimal protection in different cooking scenarios and effectively preventing food splashing, burns, or equipment contamination.

[0065] Understandably, in step S103, the precise positioning of the splash guard 13 not only effectively prevents food from splashing, but also optimizes the electromagnetic field distribution inside the microwave oven 100, avoiding microwave reflection or energy loss caused by improper positioning of the splash guard 13. By combining the preset program with food height information, the controller can ensure that the splash guard 13 minimizes energy waste, improves heating efficiency, shortens cooking time, and achieves the goal of energy conservation and environmental protection without affecting microwave penetration.

[0066] In a preferred embodiment, the microwave oven 100 further includes a height detection element disposed inside the microwave oven 100, and step S103 includes: S301. When the deviation between the actual height detected by the height detection device and the theoretical height is greater than a preset height deviation threshold, a first target spacing is generated; the first target spacing represents the sum of the first original spacing and the first compensation spacing of the preset program; the first compensation spacing is the product of the attenuation coefficient and the difference between the actual height and the theoretical height; S302. Based on the first target distance, control the telescopic rod 14 to move the splash shield 13 to the first target position.

[0067] It is understandable that the actual height of the food may deviate from the theoretical value due to factors such as uneven placement, irregular shape, or thermal expansion. Therefore, in step S301, the actual height is detected in real time by a height detection device, and a compensation mechanism is introduced when the deviation exceeds the threshold to dynamically generate the first target spacing, thereby ensuring that the splash shield 13 is always in the best protective position, significantly improving the positioning accuracy and protective effect.

[0068] In the embodiments of this application, the attenuation coefficient is 0.6-0.8.

[0069] Understandably, in step S301, the attenuation coefficient is used to adjust the degree of influence of the difference between the actual height and the theoretical height on the final target spacing. For example, if the actual height is 10mm higher than the theoretical height, and the attenuation coefficient is 0.6, then the compensation spacing is 6mm. This avoids the problem of the splash guard 13 being too high or too low due to overcompensation, making the adjustment process smoother and more reasonable, and meeting actual usage requirements.

[0070] Therefore, by adopting the above method, the anti-splash cover 13 can always be in the optimal position, which can effectively prevent food from splashing and avoid microwave reflection or obstruction due to improper position, thereby optimizing the heating effect, improving the cooking quality of food, and avoiding problems such as local overheating or uneven heating.

[0071] In a preferred embodiment, the microwave oven 100 further includes a turbidity detection element disposed in the microwave oven 100, and the step S105 is followed by: S511. Obtain the actual turbidity information sent by the turbidity detection device; S512. If the deviation between the actual turbidity information and the theoretical turbidity information is greater than a preset turbidity deviation threshold, a second target position is generated; the second target position represents the sum of the second original spacing and the second compensation spacing of the preset program; the second compensation spacing is the product of an increase coefficient and the difference between the actual turbidity and the theoretical turbidity. S513. Based on the second target distance, control the telescopic rod 14 to move the splash shield 13 to the second target position.

[0072] In a preferred embodiment, the microwave oven 100 further includes a temperature detection element disposed within the microwave oven 100, and the step S105 is followed by: S521. Obtain the actual temperature information sent by the temperature detection device; S522. If the deviation between the actual temperature information and the theoretical temperature information is greater than a preset temperature deviation threshold, a third target position is generated; the third target position represents the sum of the third original spacing and the third compensation spacing of the preset program; the third compensation spacing is the product of an increase coefficient and the difference between the actual temperature and the theoretical temperature. S523. Based on the distance to the third target, control the telescopic rod 14 to move the splash shield 13 to the position of the third target.

[0073] The methods described above are similar and will not be repeated here.

[0074] In a preferred embodiment, the microwave oven 100 includes a door and a receiving cavity 12, and after step S105, the following is further included: S531. Obtain the status signal of the door; the status signal includes an open signal and a closed signal; S532, when the status signal is an open signal, control the telescopic rod 14 to drive the splash shield 13 to retract to the top of the receiving cavity 12.

[0075] Understandably, when the door is opened, the splash guard 13 automatically retracts to the top of the receiving cavity 12, preventing it from interfering with the user's food handling and improving operational convenience. Simultaneously, the automatic retraction of the splash guard 13 prevents potential mechanical collisions or misoperations caused by manual adjustments, further enhancing safety. Furthermore, the linkage control between the door status signal and the splash guard 13 prevents accidental collisions or mechanical damage caused by forced adjustments by the user that could result from the splash guard 13 remaining in its working position when the door is open.

[0076] In a preferred embodiment, the microwave oven 100 further includes an image acquisition device disposed within the microwave oven 100, and the step S101 is followed by: When the image acquisition device acquires an unidentifiable object, a conservative procedure is generated; the conservative procedure represents controlling the splash shield 13 to descend a fixed preset distance.

[0077] In this embodiment of the application, the fixed preset distance is 20mm.

[0078] The foregoing description has fully disclosed the specific embodiments of this application. It should be noted that any modifications made by those skilled in the art to the specific embodiments of this application do not depart from the scope of the claims. Accordingly, the scope of the claims of this application is not limited to the foregoing specific embodiments.

Claims

1. A microwave oven designed to prevent food splashing, characterized in that, It includes a body, a splash shield, a telescopic rod, and a controller. The body has an internal cavity, in which the splash shield and the telescopic rod are both disposed. The telescopic rod can extend and retract along the height of the cavity. One end of the telescopic rod is connected to the top wall of the cavity, and the other end is connected to the splash shield. The controller is electrically connected to the telescopic rod and is used to control the extension and retraction of the telescopic rod to move the splash shield to a preset position.

2. The microwave oven according to claim 1, characterized in that, The splash shield includes at least three annular segments, and the inner diameter of each annular segment increases in a stepped manner along the direction away from the telescopic rod to form a trapezoidal folding structure. The splash shield has a concentric nested structure in the folded state.

3. The microwave oven according to claim 2, characterized in that, Each of the annular segments is connected by a flexible connecting part, which is a silicone corrugated ring with a thickness of 0.5-1mm and a corrugation angle between 115° and 125°.

4. The microwave oven according to claim 1, characterized in that, The telescopic rods are multiple in number and are arranged in a ring at intervals.

5. The microwave oven according to claim 1, characterized in that, The splash shield comprises a polytetrafluoroethylene outer layer and a fiberglass mesh inner layer to form a composite protective structure; The pore size of the glass fiber mesh is in the range of 0.4-0.6 mm.

6. The microwave oven according to claim 1, characterized in that, The microwave oven also includes a height detection device electrically connected to the controller. The height detection device is disposed on the side wall of the receiving cavity and is used to detect the height of the food and generate height information. The controller can control the splash guard to move to the preset position based on the height information. And / or, the splash guard is provided with a distance detection device electrically connected to the controller. The distance detection device is located at the bottom of the splash guard to detect the height of the bottom of the splash guard relative to the food and generate distance information. The controller can control the splash guard to move to the preset position based on the distance information.

7. The microwave oven according to claim 1, characterized in that, The microwave oven also includes a turbidity detection device disposed in the receiving cavity. The turbidity detection device is used to detect the turbidity in the receiving cavity and generate turbidity information. The controller can re-control the movement of the splash shield if the turbidity information is greater than the preset turbidity information. And / or, the microwave oven further includes a temperature detection element disposed in the receiving cavity, the temperature detection element being used to detect the temperature in the receiving cavity and generate temperature change information, and the controller being able to re-control the movement of the splash shield if the temperature change information is greater than a preset temperature change information.

8. A control method for a microwave oven to prevent food splashing, characterized in that, It employs the microwave oven described in any one of claims 1-7, wherein the control method is applied to a controller, and the control method includes: Acquire food height information and preset programs; Based on the food height information and the preset program, control the telescopic rod to move the splash shield to the preset position; Start the microwave oven.

9. The control method according to claim 8, characterized in that, The microwave oven also includes a height detection device disposed inside the microwave oven. The step of controlling the telescopic rod to move the splash guard to a preset position based on the food height information and the preset program includes: When the deviation between the actual height detected by the height detection device and the theoretical height is greater than a preset height deviation threshold, a first target spacing is generated; the first target spacing represents the sum of the first original spacing and the first compensation spacing of the preset program; the first compensation spacing is the product of the attenuation coefficient and the difference between the actual height and the theoretical height; Based on the first target distance, the telescopic rod is controlled to move the splash shield to the first target position.

10. The control method according to claim 8, characterized in that, The microwave oven also includes a turbidity detection device, which is disposed in the microwave oven. After the microwave oven is started, the following steps are also included: Obtain the actual turbidity information sent by the turbidity detection device; If the deviation between the actual turbidity information and the theoretical turbidity information is greater than a preset turbidity deviation threshold, a second target position is generated; the second target position represents the sum of the second original interval and the second compensation interval of the preset program; the second compensation interval is the product of an increase coefficient and the difference between the actual turbidity and the theoretical turbidity. Based on the second target distance, control the telescopic rod to move the splash shield to the second target position; And / or, the microwave oven further includes a temperature detection element disposed in the microwave oven, and after the microwave oven is started, it further includes: Obtain the actual temperature information sent by the temperature detection device; If the deviation between the actual temperature information and the theoretical temperature information is greater than a preset temperature deviation threshold, a third target position is generated; the third target position represents the sum of the third original spacing and the third compensation spacing of the preset program; the third compensation spacing is the product of an increase coefficient and the difference between the actual temperature and the theoretical temperature. Based on the distance to the third target, the telescopic rod is controlled to move the splash shield to the position of the third target.

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