Baking tray distance measuring system and steaming oven

Abstract

The utility model discloses a baking tray distance measuring system which is applied to a steaming and baking oven, and the steaming and baking oven comprises a cavity and a baking tray arranged in the cavity; the baking tray distance measuring system comprises a main control module, an alarm module and a distance measuring device, the distance measuring device is arranged in the cavity wall, parallel to the baking tray, of the cavity; the distance measuring device is provided with a protection module, a detection module and a filtering module which are connected in sequence. The main control module is connected with the detection module through the protection module. The detection module is used for measuring the distance from the cavity wall to the baking tray and transmitting distance data to the main control module; the main control module is used for receiving the distance data and outputting a matching state of the distance data and a preset distance to the alarm module; the alarm module is used for giving an alarm when the distance data is not matched with the preset distance. The utility model further provides a steaming oven. Cooking is carried out when distance data measured by the detection module is matched with a preset distance. If not, the user can be informed through the alarm module or the cooking program is finely adjusted, so that the food cooking effect is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, in particular to a baking tray distance measuring system and a steam oven. Background Art

[0002] A steam oven is a kitchen appliance that combines steam and baking functions, using steam and dry, hot air to bake food. The steam heat preserves moisture and nutrients in food, making it ideal for vegetables, fish, and rice. It can also be used to make bread, cakes, and biscuits, creating a crispy exterior and soft interior. The option to use both steam and bake simultaneously improves cooking efficiency and flavor.

[0003] Steam ovens are becoming more and more popular nowadays, but there is a common problem with all steam oven products. Steam ovens generally have upper, middle and lower layers for placing baking trays. It is easy for novice users to put the baking trays in the wrong place, resulting in food cooking failure. Utility Model Content

[0004] The main purpose of the utility model is to provide a baking tray distance measuring system and a steam oven, aiming to solve the problem that the baking tray is easily misplaced, resulting in food cooking failure.

[0005] To achieve the above objectives, the present invention proposes a baking tray distance measurement system, which is applied to a steam oven, the steam oven including a cavity and a baking tray placed in the cavity; the baking tray distance measurement system includes: a main control module, an alarm module, and a distance measurement device; the distance measurement device is arranged in a cavity wall of the cavity parallel to the baking tray; the distance measurement device is provided with a protection module, a detection module, and a filter module connected in sequence, the main control module is connected to the detection module via the protection module, the filter module is used to filter ripples in the power supply voltage, and the main control module is connected to the alarm module;

[0006] The detection module is used to measure the distance from the cavity wall to the baking tray and transmit the distance data to the main control module, and the main control module is used to receive the distance data and output the matching status of the distance data and the preset distance to the alarm module;

[0007] The alarm module is used to alarm when the distance data does not match the preset distance.

[0008] In one embodiment, the detection module includes a switch module and a detection chip, the switch module is electrically connected to the detection chip, and the switch module is used to receive a high-level signal or a low-level signal and transmit it to the detection chip.

[0009] In one embodiment, the protection module includes a first resistor, a second resistor, a third resistor, and a fourth resistor, one end of the first resistor, one end of the second resistor, one end of the third resistor, and one end of the fourth resistor are all connected to the detection chip, and the other end of the third resistor and the other end of the fourth resistor are both connected to the main control module.

[0010] In one embodiment, the filtering module is provided with a first capacitor and a second capacitor, the first capacitor and the second capacitor are connected in parallel, one end of the first capacitor and one end of the second capacitor receive a working voltage and are connected to the detection chip, and the other end of the first capacitor and the other end of the second capacitor are grounded.

[0011] In one embodiment, the distance measuring device is further provided with a conversion module, which is connected to the detection module. The conversion module is used to convert the power supply voltage of the baking tray distance measuring system into an operating voltage and input the operating voltage into the detection module.

[0012] In one embodiment, the conversion module is provided with a third capacitor and a conversion chip, one end of the third capacitor is connected to the conversion chip, the other end of the third capacitor is grounded, and the third capacitor is used to conduct the working voltage to the conversion chip.

[0013] In one embodiment, the distance measuring device includes any one of a laser sensor, an infrared sensor, and an ultrasonic sensor.

[0014] In one embodiment, the main control module includes an MCU chip, and the MCU chip is connected to the alarm module.

[0015] The utility model further provides a steam oven, comprising the baking tray distance measuring system, wherein the cavity wall of the cavity is provided with at least one supporting portion, and the baking tray is placed on the supporting portion.

[0016] In one embodiment, the baking tray is provided with a hand-held portion, the hand-held portion abuts against the support portion, and the support portion supports the baking tray in the cavity through the hand-held portion.

[0017] The utility model measures the distance from the cavity wall of the steam oven to the baking tray by adopting a detection module of a distance measuring device, and the protection module limits the input current to prevent the detection module from being damaged by overcurrent. The main control module is used to receive the distance data and detect the matching status of the distance data and the preset distance. When the distance data matches the preset distance, cooking is performed; when the distance data does not match the preset distance, the user can be informed through the alarm module or the cooking program can be fine-tuned to ensure the cooking effect of the food. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0019] Figure 1 This is a schematic diagram of the baking tray distance measurement system module;

[0020] Figure 2 This is the circuit diagram of the detection module.

[0021] Figure 3 This is the circuit diagram of the conversion module;

[0022] Figure 4 This is a schematic diagram of a steam oven;

[0023] Figure 5 This is another schematic diagram of a steam oven;

[0024] Description of Figure Numbers:

[0025] 1- cavity, 11- support part, 111- first support member, 112- second support member, 2- main control module, 3- distance measuring device, 31- detection module, 311- switch module, 32- conversion module, 33- protection module, 34- filter module, 4- baking tray, 41- handheld part, 42- guide part, 43- limit part, 5- box door, 6- alarm module, A- distance from the cavity wall to the baking tray.

[0026] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0029] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if the meaning of "and / or" appearing in the full text is to include three parallel schemes, taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0030] like Figure 1 As shown, a baking tray distance measurement system is used in a steam oven, which includes a cavity 1 and a baking tray 4 placed in the cavity 1; the baking tray distance measurement system includes: a main control module 2, an alarm module 6, and a distance measuring device 3; the distance measuring device 3 is arranged in the cavity wall of the cavity 1 parallel to the baking tray 4; the distance measuring device 3 is provided with a protection module 33, a detection module 31, and a filter module 34 connected in sequence, the main control module 2 is connected to the detection module 31 through the protection module 33, the filter module 34 is used to filter the ripple in the power supply voltage, and the main control module 2 is connected to the alarm module 6; the detection module 31 is used to measure the distance from the cavity wall to the baking tray 4 and transmit the distance data to the main control module 2, the main control module 2 is used to receive the distance data and output the matching status of the distance data and the preset distance to the alarm module 6; the alarm module 6 is used to alarm when the distance data does not match the preset distance.

[0031] The principle of the baking tray distance measurement system is as follows: the user selects a recipe, starts cooking the recipe, obtains the optimal baking tray 4 position set in the program for this recipe, which is the preset position, and calculates the distance between the distance measuring device 3 and the baking tray 4 to determine the position of the baking tray 4. In the embodiment of the present utility model, Figure 4 As shown, the present invention measures the distance from the cavity wall of the steam oven to the baking tray 4 by using the detection module 31 of the distance measuring device 3, and the protection module 33 limits the input current to prevent the detection module 31 from being damaged by overcurrent. The main control module 2 is used to receive the distance data and detect the matching status of the distance data with the preset distance. When the distance data matches the preset distance, cooking is performed; when the distance data does not match the preset distance, the alarm module 6 can be used to inform the user or the cooking program can be fine-tuned to ensure the cooking effect of the food.

[0032] In this embodiment, the baking tray distance measurement system can also be applied to ovens, steamers, integrated stoves and other equipment.

[0033] like Figure 2 As shown, the detection module 31 includes a switch module 311 and a detection chip U2. The switch module 311 is electrically connected to the detection chip U2 and is used to receive a high-level signal or a low-level signal and transmit it to the detection chip U2. In this embodiment, the switch module 311 is a VL-XSH pin, which can turn off or on the detection module 31 according to different level signals.

[0034] In this embodiment, the main control module 2 includes an MCU chip, which is connected to the alarm module 6. The main control module 2 can be a Microchip PIC series chip: such as PIC16 and PIC18 series, which are suitable for simple control tasks; STMicroelectronics STM32 series chips: suitable for more complex functions and graphical interface control; NXP LPC series chips: used for applications requiring high performance and low power consumption; Atmel AVR series chips: such as ATmega328, used for basic control needs; Texas Instruments MSP430 series chips: used for low-power applications.

[0035] The pan distance measurement system improves cooking efficiency and food quality. It precisely measures the distance between the pan 4 and the cavity wall, ensuring uniform and efficient heating of food during the cooking process. The system measures the distance between the pan 4 and the cavity wall in real time and transmits the measured data to the main control module 2. Based on changes in distance, the main control module 2 automatically adjusts the heating power, temperature, and time settings to achieve optimal cooking results. For example, if the distance measurement device 3 detects that the pan 4 is close to the cavity wall, the pan distance measurement system can reduce the heating intensity, and vice versa. The main control module 2 receives the data from the distance measurement device 3 and makes real-time adjustments based on the preset cooking program. This prevents overcooked or undercooked portions of food, thereby improving the taste and quality of the food. The system automatically adjusts the heating intensity based on actual needs, avoiding unnecessary energy waste and improving cooking efficiency. Combined with a smart home system, the pan distance measurement system enables remote monitoring and control, allowing users to track cooking progress at any time via a mobile app, enhancing operational convenience. This pan distance measurement system is not only suitable for traditional baking but can also be widely used in various cooking modes, such as steaming and boiling, to accommodate different ingredients and cooking needs.

[0036] Furthermore, the alarm module 6 can be implemented as a speaker or display screen. If the grilling tray 4 is not placed correctly, the speaker or display screen can notify the user. The user can also view the real-time distance and cooking status on the display screen, making it easier to adjust and monitor the cooking process. It should be noted that the alarm module 6 described in the present invention is prior art, and the improvement of the present invention does not lie in the technology of the alarm module 6 itself.

[0037] The Pan Distance Measurement System significantly improves cooking efficiency and food quality in kitchen appliances like steam ovens. Through precise measurement and intelligent control, the Pan Distance Measurement System not only saves energy but also enhances the user's cooking experience.

[0038] The detection module 31 transmits the detection results to the main control module 2 via IIC communication. The conversion module 32 converts the 5V supply voltage into a 2.8V operating voltage to power the detection module 31. Lowering the voltage allows the detection module 31 to operate normally and ensures compatibility. A lower operating voltage also reduces power consumption, thereby reducing heat generation in the circuit and improving system reliability and stability.

[0039] like Figure 2 As shown, the detection module 31 is provided with an IIC_SCL clock pin, an IIC_SDA pin, and a VL-INT pin. The IIC_SCL clock pin is connected to the IC clock line of the main control module 2; the IIC_SDA pin is connected to the IC data line of the main control module 2; the VL-INT pin is used by the detection module 31 to indicate that the distance data is ready.

[0040] The protection module 33 includes a first resistor R101, a second resistor R102, a third resistor R103, and a fourth resistor R104. One end of the first resistor R101, one end of the second resistor R102, one end of the third resistor R103, and one end of the fourth resistor R104 are all connected to the detection chip U2, and the other end of the third resistor R103 and the other end of the fourth resistor R104 are both connected to the main control module 2. The first resistor R101 is connected to the VL-XSH pin, the second resistor R102 is connected to the VL-INT pin, the third resistor R103 is connected to the IIC_SDA pin, and the fourth resistor R104 is connected to the IIC_SCL clock pin. The first resistor R101, the second resistor R102, the third resistor R103, and the fourth resistor R104 can limit the current passing through the pin to prevent damage to the detection chip U2 due to overcurrent, and can also help improve signal quality, reduce reflections and interference, and ensure the stability of the signal during transmission; the first resistor R101, the second resistor R102, the third resistor R103, and the fourth resistor R104 can improve the anti-interference ability of the circuit, especially in high-speed signal transmission, and reduce crosstalk between signals.

[0041] The filtering module 34 is provided with a first capacitor C102 and a second capacitor C103. The first capacitor C102 and the second capacitor C103 are connected in parallel. One end of the first capacitor C102 and one end of the second capacitor C103 receive the operating voltage and are connected to the detection chip U2. The other end of the first capacitor C102 and the other end of the second capacitor C103 are grounded. The first capacitor C102 and the second capacitor C103 can effectively filter out high-frequency noise in the power supply line, stabilize the power supply, and improve the quality of the power supply. When the detection module 31 is working, the first capacitor C102 and the second capacitor C103 can quickly provide the instantaneous pulse current required to ensure that the detection module 31 does not experience a voltage drop when the transient load changes. The first capacitor C102 and the second capacitor C103 can reduce electromagnetic interference in the circuit and improve the anti-interference ability of the overall system.

[0042] The distance measuring device 3 is further provided with a conversion module 32 , which is connected to the detection module 31 . The conversion module 32 is used to convert the power supply voltage of the baking tray distance measuring system into an operating voltage and input the operating voltage into the detection module 31 .

[0043] like Figure 3 As shown, the conversion module 32 is provided with a third capacitor C101 and a conversion chip U1. One end of the third capacitor C101 is connected to the conversion chip U1, and the other end of the third capacitor C101 is grounded. The third capacitor C101 is used to conduct the working voltage to the conversion chip U1. The third capacitor C101 filters out high-frequency noise in the power supply line.

[0044] Distance measuring device 3 can include any of a laser sensor, an infrared sensor, or an ultrasonic sensor, capable of providing accurate distance data in various environments. For example, an infrared sensor measures the distance between distance measuring device 3 and baking tray 4 inside the steam oven by emitting and receiving infrared beams. An ultrasonic sensor, for example, measures distance by reflecting ultrasonic waves and is suitable for use in humid environments.

[0045] Taking laser sensors as an example, they use laser beams to accurately measure distances and are suitable for situations where high precision is required. The working principle of laser sensors is to measure the speed of light. The laser sensor emits a beam of light and measures the time it takes for the light to be reflected back to the laser sensor. Figure 4As shown, a laser sensor is mounted at the top edge of cavity 1, capable of measuring the distance between baking tray 4 and the laser sensor. This data is transmitted to main control module 2, where the baking tray distance measurement system retrieves the optimal baking tray 4 position from the programmed recipe. It also calculates the distance between the laser sensor and baking tray 4, determines the optimal baking tray 4 position, and determines whether the actual baking tray 4 position matches the optimal baking tray 4 position. If so, cooking proceeds normally. If not, the user is notified to adjust the baking tray 4 or fine-tune the cooking process.

[0046] In addition, the distance measuring device 3 may also adopt any combination of two or three of a laser sensor, an infrared sensor, and an ultrasonic sensor to achieve more accurate distance measurement.

[0047] The detection module 31 is used to detect the time it takes for the detection signal to travel from the cavity wall to the baking tray 4 and be reflected back to the distance measuring device 3 and generate a detection duration signal. The detection module 31 transmits the detection duration signal to the main control module 2 .

[0048] like Figure 4 As shown, the present invention further proposes a steam oven, comprising the baking tray distance measuring system, wherein the cavity wall of the cavity 1 is provided with at least one supporting portion 11 , and the baking tray 4 is placed on the supporting portion 11 .

[0049] In this embodiment, the position of the baking tray 4 will be different depending on the number of support portions 11 provided. The baking tray 4 can be placed in the upper, middle or lower layer of the oven according to the required cooking method. By changing the placement position of the baking tray 4 to match different cooking methods, the food in the baking tray 4 can be prevented from being overcooked or undercooked.

[0050] The baking tray 4 is provided with a hand-held portion 41, and the hand-held portion 41 abuts against the support portion 11. The support portion 11 supports the baking tray 4 in the cavity 1 through the hand-held portion 41. The hand-held portion 41 is located around the baking tray 4. The hand-held portion 41 provides a convenient gripping point for the baking tray 4, which is convenient for the user to safely move and operate the baking tray 4; it can prevent hands from slipping, ensure greater stability during baking, and reduce the risk of accidental burns or the baking tray 4 falling.

[0051] At least one guide portion 42 is provided on the cavity wall of the cavity 1, and the guide portion 42 is located above the support portion 11. The baking tray 4 is placed on the support portion 11 along the guide portion 42. The guide portion 42 can help the baking tray 4 to be correctly positioned in the oven, ensuring that the baking tray 4 is firmly placed in the designated position to avoid sliding or tilting; by providing additional support, the guide portion 42 enhances the stability of the baking tray 4 and reduces deformation or displacement caused by thermal expansion and other reasons during the baking process; the guide design makes it more convenient for the user to put in or take out the baking tray 4, and can easily slide in and out, reducing the difficulty of operation; the reasonably designed guide portion 42 can help evenly distribute heat, improve the baking effect, and ensure that the food is heated evenly.

[0052] The support portion 11 includes a first support member 111 and a second support member 112. The first support member 111 and the second support member 112 are cooperatively arranged to support the baking tray 4 in the cavity 1. The first support member 111 and the second support member 112 can maintain the balance of the baking tray 4 in the steam oven. The support portion 11 provides solid support to ensure that the baking tray 4 does not tilt or slide during baking and remains stable; it can withstand the weight of the baking tray 4 and food to avoid deformation or damage; through appropriate support positions, it helps hot air to circulate evenly in the oven, thereby improving the baking effect; the support portion 11 makes it more convenient to put in and take out the baking tray 4, reduces the shaking of the baking tray 4, and improves the user experience.

[0053] like Figure 5 As shown, in this embodiment, the steam oven is equipped with a door 6 that opens downward, preventing the edges from being bumped when placing the baking tray 4. The door 6 can be constructed with double-glazed glass, ensuring excellent thermal insulation while allowing the user to clearly observe the cooking status of the food inside. A certain air layer is typically left between the double-glazed glass to reduce heat loss and improve energy efficiency. The door 6 is equipped with high-quality sealing strips to prevent steam from escaping during the cooking process. This sealing design not only maintains stable internal temperature and humidity but also helps improve cooking results, resulting in more tender and juicy food. Furthermore, the excellent sealing reduces energy consumption and improves overall energy efficiency. A one-touch or push-to-open mechanism allows the user to easily open the door 6 without having to pull. The design of the door 6 takes into account both sealing and ease of use, improving cooking efficiency while also providing a more convenient and safe user experience.

[0054] The cavity wall of the cavity 1 is also provided with a limiting portion 43, which is located at the end of the support portion 11 away from the oven door 6. The limiting portion 43 is used to limit the depth of the baking tray 4 placed in the steam oven, preventing the baking tray 4 from being inserted too deeply, reducing accidental burns caused by overheating or touching the inner wall of the oven; by limiting the insertion depth of the baking tray 4, it helps to maintain a good heat flow circulation and ensure that the food is heated evenly.

[0055] In this embodiment, the support portion 11 and the hand-held portion 41 are arranged to abut against each other so that the plane formed is parallel to the plane on which the baking tray 4 is placed, thereby preventing it from sliding or tilting during baking, ensuring that the food is heated evenly, and helping the hot air to circulate evenly in the oven, thereby improving the baking effect and making the baking tray 4 more stable when being placed in or taken out.

[0056] The above description is merely an optional embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by utilizing the contents of the present invention specification and drawings under the inventive concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A baking tray distance measurement system, which is used in a steam oven, characterized in that: The steam oven comprises a cavity and a baking tray placed in the cavity; The baking tray distance measurement system includes: a main control module, an alarm module, and a distance measurement device; The distance measuring device is arranged in the cavity wall of the cavity parallel to the baking tray; The distance measuring device is provided with a protection module, a detection module, and a filtering module connected in sequence. The main control module is connected to the detection module through the protection module. The filtering module is used to filter the ripple in the power supply voltage. The main control module is connected to the alarm module. The detection module is used to measure the distance from the cavity wall to the baking tray and transmit the distance data to the main control module, and the main control module is used to receive the distance data and output the matching status of the distance data and the preset distance to the alarm module; The alarm module is used to alarm when the distance data does not match the preset distance.

2. The baking tray distance measurement system according to claim 1, wherein: The detection module includes a switch module and a detection chip. The switch module is electrically connected to the detection chip. The switch module is used to receive a high-level signal or a low-level signal and transmit it to the detection chip.

3. The baking tray distance measurement system according to claim 2, wherein: The protection module includes a first resistor, a second resistor, a third resistor, and a fourth resistor. One end of the first resistor, one end of the second resistor, one end of the third resistor, and one end of the fourth resistor are all connected to the detection chip, and the other end of the third resistor and the other end of the fourth resistor are both connected to the main control module.

4. The baking tray distance measurement system according to claim 2, wherein: The filtering module is provided with a first capacitor and a second capacitor, the first capacitor and the second capacitor are connected in parallel, one end of the first capacitor and one end of the second capacitor receive a working voltage and are connected to the detection chip, and the other end of the first capacitor and the other end of the second capacitor are grounded.

5. The baking tray distance measurement system according to claim 1, wherein: The distance measuring device is further provided with a conversion module, which is connected to the detection module. The conversion module is used to convert the power supply voltage of the baking tray distance measuring system into an operating voltage and input the operating voltage into the detection module.

6. The baking tray distance measurement system according to claim 5, wherein: The conversion module is provided with a third capacitor and a conversion chip. One end of the third capacitor is connected to the conversion chip, and the other end of the third capacitor is grounded. The third capacitor is used to conduct the working voltage to the conversion chip.

7. The baking tray distance measurement system according to claim 1, wherein: The distance measuring device includes any one of a laser sensor, an infrared sensor, and an ultrasonic sensor.

8. The baking tray distance measurement system according to claim 1, wherein: The main control module includes an MCU chip, and the MCU chip is connected to the alarm module.

9. A steam oven, characterized in that: The baking tray distance measuring system comprises the baking tray distance measuring system according to any one of claims 1 to 8, wherein the cavity wall of the cavity is provided with at least one supporting portion, and the baking tray is placed on the supporting portion.

10. The steam oven according to claim 9, wherein: The baking tray is provided with a hand-held portion, the hand-held portion abuts against the support portion, and the support portion supports the baking tray in the cavity through the hand-held portion.

Images