Dry-out prevention method and dry-out prevention probe using the same

Abstract

This invention discloses an anti-dry-burning method and an anti-dry-burning probe using the same. The anti-dry-burning method is used in gas stoves equipped with an anti-dry-burning probe and includes the following steps: S10, acquiring real-time temperature data from the temperature sensor of the anti-dry-burning probe, and cooling the side of the anti-dry-burning probe when the real-time temperature data is greater than a preset temperature; S20, after cooling the side of the anti-dry-burning probe for a preset cooling time, acquiring the real-time temperature data again; otherwise, continuing to cool the side of the anti-dry-burning probe until the preset cooling time is reached; S30, comparing the real-time temperature data acquired again after reaching the preset cooling time with the preset temperature; if the real-time temperature data is still greater than the preset temperature, turning off the gas stove using the anti-dry-burning probe; otherwise, keeping the gas stove burning. This method can distinguish whether the cookware is actually in a dry-burning state and accurately turn off the flame, avoiding affecting the user experience and meeting different cooking needs.

Description

Technical Field

[0001] This invention relates to a method for preventing dry burning and a probe for preventing dry burning using the same. Background Technology

[0002] Most gas stoves nowadays have an anti-dry-burning function. The gas stove can use an anti-dry-burning probe to measure the temperature of the bottom of the pot during cooking, so that the gas stove can be turned off in time when the pot is dry-burning, avoiding a series of safety problems caused by the pot continuing to dry-burn.

[0003] However, when the anti-dry-burning probe operates continuously for extended periods, its sidewalls become excessively hot from the flame. This high temperature is then conducted to the probe's measuring end, causing it to mistakenly shut off the gas stove when the sidewall is too hot. In other words, besides shutting off the gas stove when the cookware is dry-burning, there are other situations that could cause it to shut off. This misjudgment significantly affects the accuracy of the probe's measurement of the cookware's bottom temperature, resulting in a poor user experience. Current solutions typically involve placing high-temperature resistant materials on the sidewalls of the probe for insulation. However, this not only increases the manufacturing cost of the gas stove but also means that some heat is still transferred to the probe, leading to misjudgments. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the defect in the prior art where the temperature measuring end of the anti-dry burning probe is affected by the side wall temperature, causing the gas stove to be turned off accidentally. The present invention provides an anti-dry burning method and an anti-dry burning probe using the same.

[0005] The present invention solves the above-mentioned technical problems through the following technical solution:

[0006] A method for preventing dry burning, the method being used in a gas stove equipped with a dry burning prevention probe, the method comprising the following steps:

[0007] S10. Obtain the real-time temperature data of the temperature sensor of the anti-dry-burning probe, and cool down the side of the anti-dry-burning probe when the real-time temperature data is greater than the preset temperature.

[0008] S20. After cooling the side of the anti-dry-burning probe for a preset cooling time, the real-time temperature data is reacquired; otherwise, the side of the anti-dry-burning probe is cooled until the preset cooling time is reached.

[0009] S30. The real-time temperature data obtained again after the preset cooling time is reached is compared with the preset temperature. If the real-time temperature data is still greater than the preset temperature, the gas stove is turned off using the anti-dry-burning probe; otherwise, the gas stove is kept burning.

[0010] In this solution, real-time temperature data from a temperature sensor is acquired, which is more accurate than acquiring temperature data from the bottom of the cookware or the side of the anti-dry-burn probe. This reduces the possibility of misjudging when the gas stove is turned off. By cooling the side of the anti-dry-burn probe and then re-acquiring real-time temperature data after a preset cooling time, the solution avoids the temperature from the side of the anti-dry-burn probe being transmitted to the temperature sensor and affecting the real-time temperature data. This also prevents the side of the anti-dry-burn probe from interfering with the temperature sensor due to the radiant heat of the flame, thus avoiding situations where the gas stove is turned off when the cookware is not actually dry-burning. This solution can distinguish whether the cookware is actually dry-burning and turn off the gas accurately, avoiding any impact on the user experience and meeting different cooking needs.

[0011] Preferably, the anti-dry-burning method further includes the following step in step S30:

[0012] S31. When comparing the real-time temperature data with the preset temperature, continuously acquire a real-time temperature data points, and use k... n =(T n -T n-1 ) / 1.5 Calculate the temperature rise slope of a real-time temperature data points, and when there are b k n When the value is greater than 1, the gas stove is turned off, where a ranges from 40 to 20, b ranges from 30 to 10, and k... n T represents the sign of the slope between the previous and real-time temperature data. n For the real-time temperature data, T n-1 This is the temperature data from the previous moment.

[0013] In this solution, multiple real-time temperature data are continuously acquired, and the temperature rise slope is calculated using a formula. This allows the system to determine if the cookware is dry-burning when multiple real-time temperature data gradually increase. When b real-time temperature data are greater than 1, the gas stove under the cookware that is actually dry-burning is turned off. Using the temperature rise slope for judgment further improves the accuracy of the judgment and prevents situations where the cookware temperature suddenly rises and then stabilizes during cooking with the gas stove adjusted, thus avoiding the situation where the gas stove can be turned off even when the cookware is not actually dry-burning.

[0014] Preferably, the following steps are included before step S10:

[0015] S1. Obtain the real-time temperature data of the temperature sensor, and when the real-time temperature data is less than the preset temperature, generate electricity by utilizing the temperature difference between the side of the anti-dry burning probe and the area where the temperature sensor is located, and charge the rechargeable battery that supplies power to the gas stove.

[0016] In this solution, electricity is generated by the temperature difference between the side of the anti-dry-burning probe and the area where the temperature sensor is located. The generated electricity is then used to charge the rechargeable battery installed in the gas stove. This replaces the traditional dry cell battery or plug-and-socket power supply method, solving the problem of frequent dry cell battery replacements for smart gas stoves and the limitations of plug replacements required for power supply. By using temperature difference to generate electricity and recover waste heat, it is environmentally friendly. In a closed-circuit state, the temperature difference generation can maintain the side of the anti-dry-burning probe within a suitable temperature range, reducing the impact of the side of the anti-dry-burning probe on the temperature sensor and thus reducing the probability of false dry-burning detection.

[0017] Preferably, step S1 further includes the following step:

[0018] When the real-time temperature data is greater than the preset temperature, c real-time temperature data are continuously acquired. When at least d of the c real-time temperature data are greater than the preset temperature, the cooling step in step S10, as well as steps S20 and S30, are executed. Otherwise, the temperature difference is used to generate electricity and charge the rechargeable battery that supplies power to the gas stove. Here, c ranges from 15 to 3, and d ranges from 10 to 2.

[0019] In this solution, multiple real-time temperature data are continuously acquired, and when d real-time temperature data exceed a preset temperature, the side of the anti-dry-burn probe is cooled. Before cooling the anti-dry-burn probe, the temperature difference between the side of the anti-dry-burn probe and the area where the temperature sensor is located is used to generate electricity, ensuring the power supply of the gas stove. This allows the anti-dry-burn probe to switch between cooling mode and power generation mode based on real-time temperature data, so as to utilize residual heat within a reasonable temperature range and accurately distinguish whether the cookware is actually dry-burning.

[0020] An anti-dry-burning probe is disclosed. The anti-dry-burning probe uses the anti-dry-burning method described above to provide a dry-burning warning for a pot heated on a gas stove. The anti-dry-burning probe includes a housing, a heat collection plate is provided at the end of the housing corresponding to the pot, a temperature sensor is provided at the axis of the heat collection plate, and a thermoelectric generator module is sleeved on the side of the housing. The anti-dry-burning probe also includes a relay and a control board. The real-time temperature data measured by the temperature sensor is transmitted to the control board, and the control board switches the thermoelectric generator module between a power generation mode and a cooling mode through the relay.

[0021] In this solution, a thermoelectric generator module is positioned on the side of the housing, so that the side of the anti-dry-burn probe is adjacent to the flame of the gas stove. The flame's influence on the thermoelectric generator module allows it to generate electricity using the temperature difference between itself and the area where the temperature sensor is located. The control board and relay can switch the mode of the thermoelectric generator module, specifically a power generation mode and a cooling mode. In power generation mode, the rechargeable battery in the gas stove is charged, replacing the traditional power supply mode. In cooling mode, the thermoelectric generator module itself is cooled to reduce the false alarms caused by the temperature from the side of the anti-dry-burn probe affecting the real-time temperature data. This allows for precise gas stove shut-off, rather than the indiscriminate shut-off in various situations, thus improving the user experience and meeting the actual needs of users.

[0022] Preferably, the thermoelectric power generation module is configured to generate electricity when the real-time temperature data is lower than a preset temperature, and to cool down the thermoelectric power generation module when the real-time temperature data is higher than the preset temperature.

[0023] In this solution, the thermoelectric power generation module can switch modes based on real-time temperature data. It is highly automated and requires no human intervention. It also avoids being affected by other factors, thereby improving the accuracy of the anti-dry-burning probe.

[0024] Preferably, the thermoelectric power generation module is electrically connected to the rechargeable battery of the gas stove, and a boost voltage regulator module is also provided between the thermoelectric power generation module and the rechargeable battery, the boost voltage regulator module being connected in series with the thermoelectric power generation module and the rechargeable battery.

[0025] In this solution, by setting up a boost voltage regulator module, the power generated by the thermoelectric generator module has a stable voltage, which in turn can adjust the current entering the rechargeable battery, ensuring the safety and lifespan of the rechargeable battery and avoiding a series of safety issues caused by frequent voltage and current changes.

[0026] Preferably, a heat insulation layer is provided between the housing and the thermoelectric power generation module.

[0027] In this solution, a heat insulation layer is set to block the heat transfer between the thermoelectric generator module and the housing, preventing the temperature of the thermoelectric generator module from being transferred to the area where the temperature sensor is located inside the housing and affecting the temperature measurement accuracy of the temperature sensor. At the same time, the heat insulation layer can prevent the temperature sensor from being affected when the thermoelectric generator module switches between power generation mode and cooling mode, thus realizing the various functions of the anti-dry burning probe.

[0028] Preferably, the thermoelectric power generation module includes an annular panel and power generation units. The annular panel is coated with a thermally conductive layer on the side facing the housing. A plurality of power generation units are evenly distributed on the side of the thermally conductive layer facing the housing. A thermal insulation layer is located between the power generation units and the housing. The side of the power generation units facing the thermal insulation layer is coated with a thermally conductive layer.

[0029] In this design, the annular panel transfers heat to the power generation unit through a heat-conducting layer. The power generation unit generates electricity using the temperature difference. At the same time, a heat-conducting layer is set on the side of the power generation unit facing the insulation layer to improve the temperature transfer efficiency and achieve power generation smoothly.

[0030] Preferably, the anti-dry-burning probe further includes a fastener located at the end of the housing away from the cookware and thereby positioning the thermoelectric generator module on the side of the housing.

[0031] In this solution, fasteners are used to detachably connect the thermoelectric generator module to the housing, which not only improves the maintenance efficiency of the anti-dry-burn probe, but also avoids placing it near the temperature sensor end, thus reducing its impact on temperature measurement.

[0032] The positive and progressive effects of this invention are as follows: By acquiring real-time temperature data from a temperature sensor, compared to acquiring temperature data from the bottom of the cookware or the side of the anti-dry-burn probe, this invention offers higher accuracy and reduces misjudgments when turning off the gas stove. By cooling the side of the anti-dry-burn probe and then re-acquiring real-time temperature data after a preset cooling time, this invention prevents the temperature from the side of the anti-dry-burn probe from being transmitted to the temperature sensor and affecting the real-time temperature data. This avoids the side of the anti-dry-burn probe, affected by flame radiation heat, interfering with the temperature sensor and causing the gas stove to be turned off when the cookware is not actually dry-burning. This invention can distinguish whether the cookware is actually dry-burning and accurately turn off the stove, avoiding impacting the user experience and meeting different cooking needs. Attached Figure Description

[0033] Figure 1 This is a flowchart of a preferred embodiment of the anti-dry-burning method of the present invention.

[0034] Figure 2 This is a flowchart of a preferred embodiment of the anti-dry-burning method of the present invention.

[0035] Figure 3 This is a schematic diagram of the power generation circuit of a preferred embodiment of the anti-dry-burning method of the present invention.

[0036] Figure 4 This is a schematic diagram of the cooling circuit for a preferred embodiment of the anti-dry-burning method of the present invention.

[0037] Figure 5This is a schematic diagram of the structure of the anti-dry-burning probe according to a preferred embodiment of the present invention.

[0038] Figure 6 This is a diagram showing the positional relationship between the fastener and the thermoelectric generator module in a preferred embodiment of the present invention.

[0039] Figure 7 This is a schematic diagram of the structure of a fastener according to a preferred embodiment of the present invention.

[0040] Figure 8 This is a cross-sectional view of an anti-dry-burning probe according to a preferred embodiment of the present invention.

[0041] Figure 9 This is a schematic diagram of the structure of a thermoelectric power generation module according to a preferred embodiment of the present invention.

[0042] Figure 10 This is a diagram showing the positional relationship between the heat insulation layer and the annular panel in a preferred embodiment of the present invention.

[0043] Figure 11 This is a schematic diagram of the structure of a power generation unit according to a preferred embodiment of the present invention.

[0044] Figure 12 This is a schematic diagram of the housing structure according to a preferred embodiment of the present invention.

[0045] Explanation of reference numerals in the attached figures:

[0046] Anti-dry burning probe 100

[0047] Temperature sensor 10

[0048] Casing 20

[0049] Heat collector plate 21

[0050] Spring 22

[0051] Thermoelectric power generation module 30

[0052] Insulation layer 31

[0053] Circular panel 32

[0054] Power generation unit 33

[0055] Relay 40

[0056] 50 rechargeable batteries

[0057] Switch 60

[0058] Load 70

[0059] Boost regulator module 80

[0060] Fastener 90 Detailed Implementation

[0061] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments described herein.

[0062] This embodiment provides a method for preventing dry burning, such as Figure 1 and Figure 2 As shown, the anti-dry-burning method is used for gas stoves equipped with an anti-dry-burning probe 100, and the anti-dry-burning method includes the following steps:

[0063] S10. Obtain the real-time temperature data of the temperature sensor 10 of the anti-dry-burn probe 100, and cool down the side of the anti-dry-burn probe 100 when the real-time temperature data is greater than the preset temperature.

[0064] S20. After cooling the side of the anti-dry-burning probe 100 for the preset cooling time, the real-time temperature data is reacquired; otherwise, the side of the anti-dry-burning probe 100 is cooled until the preset cooling time is reached.

[0065] S30. Compare the real-time temperature data obtained after the preset cooling time with the preset temperature. If the real-time temperature data is still greater than the preset temperature, turn off the gas stove using the anti-dry-burning probe 100; otherwise, keep the gas stove burning.

[0066] Specifically, the anti-dry-burn probe 100 includes a temperature sensor 10 located on the axis and a housing 20 located on the outer periphery of the temperature sensor 10. A thermoelectric power generation module 30 is sleeved on the outer periphery of the housing 20. The thermoelectric power generation module 30 serves as the side of the anti-dry-burn probe 100 and is used to receive the radiant heat generated by the flame during gas stove combustion. Compared to the method of heat reception by the housing 20, the actual heat-receiving structure is further increased at a distance from the temperature sensor 10 to reduce the impact on the temperature sensor 10 when the temperature of the thermoelectric power generation module 30 is higher than that of the temperature sensor 10. Furthermore, by acquiring real-time temperature data from the temperature sensor 10 during gas stove combustion, the accuracy is higher than acquiring temperature data from the bottom of the pot or the side of the anti-dry-burn probe 100.

[0067] When the gas stove is in use, a control board (not shown in the figure) electrically connected to the temperature sensor 10 and the thermoelectric generator module 30 sends a cooling signal to the thermoelectric generator module 30 on the side of the anti-dry-burning probe 100, causing the thermoelectric generator module 30 to cool itself down, thus preventing the temperature of the thermoelectric generator module 30 from being transmitted to the temperature sensor 10 and reducing its impact. In this embodiment, the preset temperature is 200℃. In other embodiments, other temperature values ​​can be set according to actual needs. This is prior art and will not be described in detail here. Temperature sensor 10 measures the real-time temperature of the bottom of the cookware. When the real-time temperature exceeds a preset temperature, the side of the anti-dry-burn probe 100 is cooled. This is achieved by cooling the thermoelectric generator module 30 itself. This prevents the heat from the thermoelectric generator module 30 from exceeding the temperature sensor 10's temperature, causing the temperature sensor 10 to read a reading higher than the actual temperature of the cookware bottom. Consequently, the temperature sensor 10 might issue a dry-burn warning based on this inflated reading, unexpectedly shutting off the gas stove. This avoids other situations where, besides the cookware actually being dry-burning, the side of the anti-dry-burn probe 10 might affect the temperature sensor 10 and trigger a dry-burn warning, thus shutting off the gas stove. In this embodiment, by cooling the side of the anti-dry-burn probe 100 to eliminate other situations that could shut off the gas stove, the misjudgment when turning off the gas stove is reduced.

[0068] Furthermore, when cooling the side of the anti-dry-burn probe 100, a preset cooling time is used. In this embodiment, the preset cooling time is 10 seconds, but this is not a limitation. This ensures that the real-time temperature data of the temperature sensor 10 is reacquired only after the preset cooling time has been reached. This prevents the temperature on the side of the anti-dry-burn probe 100 from being transmitted to the temperature sensor 10 and affecting the real-time temperature data. This also prevents the side of the anti-dry-burn probe 100 from interfering with the temperature sensor 10 due to the radiant heat of the flame, thus avoiding the situation where the gas stove is turned off when the cookware is not dry-burning. This ensures the accuracy of the real-time temperature data and can reflect whether the cookware is actually in a dry-burning state. At the same time, the anti-dry-burn probe 100 can determine whether the cookware is actually in a dry-burning state based on the real-time temperature data reacquired after cooling and turn off the gas stove accordingly or ensure that the gas stove continues to burn. This eliminates the possibility of the gas stove being turned off when the cookware is not in a dry-burning state, achieving precise shut-off when the cookware is in a dry-burning state, avoiding affecting the user experience and meeting the different cooking needs of users. In other embodiments, the preset cooling time can be other times, such as 15 seconds, which can be adjusted according to the specific value of the flame radiation heat of the gas stove. This is existing technology and will not be elaborated on here.

[0069] In this embodiment, the anti-dry-burning method further includes the following step in step S30:

[0070] S31. When comparing real-time temperature data with preset temperature, continuously acquire a real-time temperature data points, and use k... n =(T n -T n-1 ) / 1.5 Calculate the temperature rise slope of a real-time temperature data points, and when there are b k n When the value is greater than 1, turn off the gas stove. Here, 'a' ranges from 40 to 20, 'b' ranges from 30 to 10, and 'k'... n T represents the sign of the slope between the previous and real-time temperature data. n For real-time temperature data, T n-1 This is the temperature data from the previous moment.

[0071] Specifically, after cooling down, based on the real-time temperature data of temperature sensor 10, a real-time temperature data are continuously obtained, that is, multiple real-time temperature data are obtained continuously. Compared with obtaining a single real-time temperature data, the reliability and accuracy of the data are greatly improved, avoiding the situation where temperature sensor 10 misjudges and shuts off the gas stove when a single real-time temperature data is abnormal.

[0072] Simultaneously, the temperature rise slope of 'a' real-time temperature data points is calculated using a formula. When 'b' real-time temperature data points are greater than 1, indicating a gradual increase in multiple real-time temperature data points, the cookware is judged to be in a dry-burning state, and the gas stove is turned off. This provides a dry-burning warning for cookware that is actually dry-burning. Using the temperature rise slope for judgment further improves the accuracy of the judgment, preventing the situation where the cookware temperature suddenly rises and then stabilizes during gas stove cooking, thus avoiding the mistaken judgment of dry-burning. This distinguishes the situation where the gas stove is turned off even when the cookware is not actually dry-burning, preventing situations where the gas stove can be turned off even in other circumstances besides dry-burning. Preferably, 'a' is 20 and 'b' is 12. It should be noted that in this embodiment, the time to acquire real-time temperature data is 1.5 seconds per data point to minimize the time required to acquire multiple consecutive real-time temperature data points, avoiding potential safety issues that might arise if the data acquisition time is long while the cookware is actually dry-burning. In other embodiments, the data acquisition time can be adjusted according to the actual situation, which will not be elaborated further here.

[0073] In this embodiment, the following steps are included before step S10:

[0074] S1. Obtain real-time temperature data from temperature sensor 10, and generate electricity by utilizing the temperature difference between the side of anti-dry-burning probe 100 and the area where temperature sensor 10 is located when the real-time temperature data is lower than the preset temperature, and charge the rechargeable battery 50 that supplies power to the gas stove.

[0075] Specifically, before steps S10, S20, and S30, step S1 is executed first. In step S1, when the real-time temperature data is lower than the preset temperature, the cookware is in normal cooking mode. In this case, the temperature of the side of the anti-dry-burn probe 100 and the area where the temperature sensor 10 is located are measured. The temperature measurement results show that there is a temperature difference between the two, which is generally between 70°C and 80°C, and even larger when the flame radiation heat is greater. By using the residual heat from the flame radiation heat to generate electricity in the temperature difference power generation module 30 on the side of the anti-dry-burn probe 100, the residual heat generated by the flame radiation heat can be used to make reasonable use of the temperature difference. On the one hand, it can generate electricity... The generated electricity charges the rechargeable battery 50 installed in the gas stove, replacing the traditional dry cell battery or plug-and-socket power supply method. This solves the problem of frequent dry cell battery replacements for smart gas stoves and the installation limitations caused by the need to place the gas stove in a socket location when using a power supply. On the other hand, the use of thermoelectric power generation to recover waste heat is green and environmentally friendly. When using thermoelectric power generation, the side of the anti-dry burning probe 100 and the area where the temperature sensor 10 is located can be maintained in a suitable temperature range, reducing the impact of the side of the anti-dry burning probe on the temperature sensor and thus reducing the probability of false dry burning detection.

[0076] In this embodiment, the positive terminal of the thermoelectric power generation module 30 is connected to the positive terminal of the rechargeable battery 50, and the negative terminal of the thermoelectric power generation module 30 is connected to the negative terminal of the rechargeable battery 50. The thermoelectric power generation module 30 also has a circuit with a first indicator light and a second indicator light connected in series in the circuit. The first indicator light and the second indicator light are electrically connected to the control board. When the real-time temperature data is greater than the preset temperature, the control board cools the side of the anti-dry-burning probe 100, and the first indicator light in the corresponding circuit lights up to indicate to the user that the current mode is cooling. When the real-time temperature data is less than the preset temperature, the temperature difference between the side of the anti-dry-burning probe 100 and the area where the temperature sensor 10 is located is used to generate electricity, and the second indicator light in the corresponding circuit lights up, and the first indicator light turns off to indicate to the user that the current mode is generating electricity.

[0077] In this embodiment, step S1 further includes the following step:

[0078] When the real-time temperature data is greater than the preset temperature, c real-time temperature data are continuously acquired. When at least d real-time temperature data among the c real-time temperature data are greater than the preset temperature, the cooling step in step S10, as well as steps S20 and S30, are executed. Otherwise, the temperature difference is used to generate electricity and charge the rechargeable battery 50 that supplies power to the gas stove. Here, c ranges from 15 to 3, and d ranges from 10 to 2.

[0079] Specifically, by continuously acquiring multiple real-time temperature data points, and when *d* real-time temperature data points exceed a preset temperature, the side of the anti-dry-burn probe is cooled. This allows the temperature difference between the side of the anti-dry-burn probe and the area where the temperature sensor is located to generate electricity before cooling, ensuring the gas stove's power supply. If fewer than *d* real-time temperature data points exceed the preset temperature, the cooling mode is not entered; instead, the temperature difference between the side of the anti-dry-burn probe 100 and the temperature sensor 10 is used to generate electricity (power generation mode). This allows the anti-dry-burn probe to switch between cooling and power generation modes based on real-time temperature data, utilizing residual heat within a reasonable temperature range and accurately distinguishing whether the cookware is actually dry-burning. Preferably, c is 5 and d is 3.

[0080] like Figure 5 As shown, this embodiment also provides an anti-dry-burning probe 100. The anti-dry-burning probe 100 uses the above-mentioned anti-dry-burning method to provide a dry-burning warning for the pot heated on the gas stove. The anti-dry-burning probe 100 includes a housing 20. A heat collection plate 21 is provided at the end of the housing 20 corresponding to the pot. A temperature sensor 10 is provided at the axis of the heat collection plate 21. A thermoelectric generator module 30 is sleeved on the side of the housing 20. The anti-dry-burning probe 100 also includes a relay 40 and a control board. The real-time temperature data measured by the temperature sensor 10 is transmitted to the control board. The control board switches the thermoelectric generator module 30 between power generation mode and cooling mode through the relay 40.

[0081] like Figure 3 As shown, in this embodiment, the anti-dry-burning probe 100 has corresponding circuits for power generation mode and cooling mode. The thermoelectric power generation module 30 is set close to the flame of the gas stove and located on the outer periphery of the housing 20. The thermoelectric power generation module 30 is connected in series with the temperature sensor 10, the relay 40 and the rechargeable battery 50, and is connected in parallel with the switch 60 and the load 70 to ensure the current stability of the circuit through the load 70. The rechargeable battery 50 supplies power to the temperature sensor 10 via a branch circuit. In power generation mode, the radiant heat generated by the flame when the gas stove is burning first contacts the thermoelectric generator module 30, and the power generated by the thermoelectric generator module 30 passes through the thermoelectric generator module 30, the relay 40, and finally enters the rechargeable battery 50, thus charging the rechargeable battery 50 and replacing the traditional power supply mode. In cooling mode, the relay 40 is disconnected and the rechargeable battery 50 supplies power to the temperature sensor 10 via a branch circuit. The thermoelectric generator module 30 cools itself to prevent the temperature generated by the flame radiant heat from being transmitted to the side of the anti-dry burning probe 100 to the temperature sensor 10, reducing the possibility of misjudgment by the temperature sensor 10 under the influence of the flame. This enables the gas stove to be turned off accurately, rather than being able to turn off the gas stove in various situations, thereby improving the user experience and meeting the actual needs of users.

[0082] like Figure 8 and Figure 12 As shown, in this embodiment, the housing 20 also includes a spring 22. The spring 22 is disposed inside the housing 20, with one end of the spring abutting against the heat collection plate 21 and the other end of the spring abutting against the end of the housing away from the heat collection plate 21, so that the spring 22 can provide elastic force to the heat collection plate 21. In other embodiments, the temperature sensor 10 can also be an NTC thermistor, which can also realize the temperature measurement of the bottom of the pot. This is prior art and will not be described in detail here. The housing 20 also has a wire connected to the temperature sensor 10 to realize the power supply to the temperature sensor 10. The thermoelectric generator module 30 has a cylindrical structure, and the height of the end of the thermoelectric generator module 30 is less than or equal to the height of the heat collection plate 21, so as to avoid the situation where the height of the end of the thermoelectric generator module 30 is greater than the height of the heat collection plate 21 during temperature measurement, which would prevent the heat collection plate 21 from contacting the bottom of the pot and causing the temperature measurement data to be distorted.

[0083] In this embodiment, the thermoelectric power generation module 30 is configured to generate electricity when the real-time temperature data is lower than a preset temperature, and to cool down the thermoelectric power generation module when the real-time temperature data is higher than the preset temperature. The thermoelectric power generation module 30 can switch modes based on the real-time temperature data via the control board and relay 40, achieving a high degree of automation without human intervention. Simultaneously, in cooling mode, it prevents the temperature sensor 10 from being accidentally shut off due to the high temperature of the flame, thereby improving the accuracy of the anti-dry-burn probe 100.

[0084] like Figure 4 As shown, in this embodiment, the thermoelectric power generation module 30 is electrically connected to the rechargeable battery 50 of the gas stove, and a boost voltage regulator module 80 is also provided between the thermoelectric power generation module 30 and the rechargeable battery 50. The boost voltage regulator module 80 is connected in series with the thermoelectric power generation module 30 and the rechargeable battery 50.

[0085] Specifically, the thermoelectric power generation module 30 generates electricity within a reasonable temperature range by utilizing the temperature difference between the side of the anti-dry-burning probe 100 and the temperature sensor 10. The generated electricity enters the control board and the rechargeable battery 50 via the boost regulator module 80. Simultaneously, the control board is electrically connected to the temperature sensor 10, and when the real-time temperature data measured by the temperature sensor 10 exceeds a preset temperature, the control board activates the relay 40, thereby switching the thermoelectric power generation module 30 from power generation mode to cooling mode. The boost regulator module 80 is a conventional boost regulator circuit connected in series with the rechargeable battery 50. The power generated by the thermoelectric power generation module 30 may experience voltage and current instability. The boost regulator module 80 stabilizes the voltage entering the rechargeable battery 50 at 3V, thereby ensuring the battery's lifespan and reducing maintenance cycles.

[0086] In other embodiments, to ensure a stable current entering the rechargeable battery 50, a corresponding circuit can be provided to adjust the magnitude of the current entering the rechargeable battery 50. This ensures the safe use and lifespan of the rechargeable battery 50, and avoids a series of safety problems caused by frequent voltage and current changes.

[0087] like Figure 10 As shown, in this embodiment, a heat insulation layer 31 is provided between the housing 20 and the thermoelectric power generation module 30.

[0088] Specifically, the heat insulation layer 31 is a cylindrical structure and is sleeved on the outer periphery of the housing 20. The heat insulation layer 31 uses heat insulation materials in the prior art, such as rock wool board. The heat insulation layer 31 is connected to the thermoelectric power generation module 30 so that heat can be blocked when the thermoelectric power generation module 30 is sleeved on the outer periphery of the housing 20, preventing the heat in the thermoelectric power generation module 30 from being transferred to the area where the temperature sensor 10 is located and affecting the temperature measurement accuracy of the temperature sensor 10. At the same time, the heat insulation layer 31 can avoid affecting the temperature sensor 10 when the thermoelectric power generation module 30 switches between power generation mode and cooling mode, so as to realize the various functions of the anti-dry burning probe 100.

[0089] like Figure 9 and Figure 11 As shown, in this embodiment, the thermoelectric power generation module 30 further includes an annular panel 32 and power generation units 33. The annular panel 32 is coated with a heat-conducting layer (not shown in the figure) on the side facing the housing 20. Multiple power generation units 33 are evenly distributed on the side facing the housing 20 of the heat-conducting layer. A heat insulation layer 31 is located between the power generation units 33 and the housing 20. The side of the power generation units 33 facing the heat insulation layer 31 is coated with a heat-conducting layer.

[0090] Specifically, the annular panel 32 has a cylindrical structure and is made of ceramic. This ceramic material can withstand the radiant heat of the flame, and its poor thermal conductivity slows down heat transfer to the area where the temperature sensor 10 is located, reducing its impact on the sensor. The power generation unit 33 is composed of several pairs of P / N type semiconductors connected in series. These pairs are arranged horizontally and vertically to form a cylindrical structure. The power generation unit 33 is located between the annular panel 32 and the heat insulation layer 31. It has a positive and a negative electrode to connect to the positive and negative electrodes of the rechargeable battery 50. In other embodiments, the power generation unit 33 can also be other existing structures that utilize thermoelectric power generation, which will not be elaborated upon here.

[0091] The thermal conductive layer is thermally conductive silicone grease, which is uniformly applied to the side of the annular panel 32 facing the housing 20 and the side of the power generation unit 33 facing the heat insulation layer 31 by coating. In fact, the thermal conductive layer is set on the opposite sides of the power generation unit 33 to realize the generation of electricity by temperature difference.

[0092] like Figure 6 and Figure 7 As shown, in this embodiment, the anti-dry-burning probe 100 also includes a fastener 90, which is located at the end of the housing 20 away from the cookware and positions the thermoelectric generator module 30 on the side of the housing 20.

[0093] Specifically, the thermoelectric power generation module 30 has a cylindrical structure, the housing 20 has a cylindrical structure, the fastener 90 has a ring structure, and a through hole is provided at the axis of the fastener 90 for the housing 20 to pass through. The fastener 90 also has a receiving area for accommodating the end of the thermoelectric power generation module 30. A limiting part is provided in the receiving area. The limiting part is a protrusion extending horizontally from the side wall of the fastener 90. When the thermoelectric power generation module 30 is placed in the receiving area, the limiting part abuts against the end of the thermoelectric power generation module 30 to achieve positioning of the thermoelectric power generation module 30. The housing 20 is inserted into the through hole and simultaneously inserted into the axis of the cylindrical structure of the thermoelectric power generation module 30, so that the thermoelectric power generation module 30 is sleeved on the outer periphery of the housing 20. The end face of the fastener 90 away from the temperature sensor 10 is flush and used to abut against the base of the gas stove, thereby supporting the thermoelectric power generation module 30 to a predetermined height. By setting fastener 90 to detachably connect the thermoelectric generator module 30 to the housing 20, the maintenance efficiency of the anti-dry-burn probe 100 can be improved, and it can also avoid being placed near the temperature sensor 10, thereby reducing the impact on temperature measurement.

[0094] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but all such changes and modifications fall within the scope of protection of the present invention.

Claims

1. A method for preventing dry burning, said method for a gas stove equipped with a dry burning prevention probe, characterized in that, The method for preventing dry burning includes the following steps: S10. Obtain the real-time temperature data of the temperature sensor of the anti-dry-burning probe, and cool down the side of the anti-dry-burning probe when the real-time temperature data is greater than the preset temperature. S20. After cooling the side of the anti-dry-burning probe for a preset cooling time, the real-time temperature data is reacquired; otherwise, the side of the anti-dry-burning probe is cooled until the preset cooling time is reached. S30. The real-time temperature data obtained again after the preset cooling time is reached is compared with the preset temperature. If the real-time temperature data is still greater than the preset temperature, the gas stove is turned off using the anti-dry-burning probe; otherwise, the gas stove is kept burning.

2. The method for preventing dry burning as described in claim 1, characterized in that, The method for preventing dry burning also includes the following steps in step S30: S31. When comparing the real-time temperature data with the preset temperature, continuously acquire a real-time temperature data points, and use k... n =(T n -T n-1 ) / 1.5 Calculate the temperature rise slope of a real-time temperature data points, and when there are b k n When the value is greater than 1, the gas stove is turned off, where a ranges from 40 to 20, b ranges from 30 to 10, and k... n T represents the sign of the slope between the previous and real-time temperature data. n For the real-time temperature data, T n-1 This is the temperature data from the previous moment.

3. The method for preventing dry burning as described in claim 1, characterized in that, The following steps are included before step S10: S1. Obtain the real-time temperature data of the temperature sensor, and when the real-time temperature data is less than the preset temperature, generate electricity by utilizing the temperature difference between the side of the anti-dry burning probe and the area where the temperature sensor is located, and charge the rechargeable battery that supplies power to the gas stove.

4. The method for preventing dry burning as described in claim 3, characterized in that, Step S1 also includes the following steps: When the real-time temperature data is greater than the preset temperature, c real-time temperature data are continuously acquired. When at least d of the c real-time temperature data are greater than the preset temperature, the cooling step in step S10, as well as steps S20 and S30, are executed. Otherwise, the temperature difference is used to generate electricity and charge the rechargeable battery that supplies power to the gas stove. Here, c ranges from 15 to 3, and d ranges from 10 to 2.

5. A dry-burning prevention probe, wherein the dry-burning prevention probe employs the dry-burning prevention method as described in any one of claims 1-4 to provide a dry-burning warning for a pot heated on the gas stove, characterized in that, The anti-dry-burning probe includes a housing, a heat collection plate is provided at the end of the housing corresponding to the end of the cookware, a temperature sensor is provided at the axis of the heat collection plate, and a thermoelectric generator module is sleeved on the side of the housing. The anti-dry-burning probe also includes a relay and a control board. The real-time temperature data measured by the temperature sensor is transmitted to the control board, and the control board switches the thermoelectric generator module between power generation mode and cooling mode through the relay.

6. The anti-dry-burning probe as described in claim 5, characterized in that, The thermoelectric power generation module is configured to generate electricity when the real-time temperature data is lower than the preset temperature, and to cool down the thermoelectric power generation module when the real-time temperature data is higher than the preset temperature.

7. The anti-dry-burning probe as described in claim 5, characterized in that, The thermoelectric power generation module is electrically connected to the rechargeable battery of the gas stove, and a boost voltage regulator module is also provided between the thermoelectric power generation module and the rechargeable battery. The boost voltage regulator module is connected in series with the thermoelectric power generation module and the rechargeable battery.

8. The anti-dry-burning probe as described in claim 5, characterized in that, A heat insulation layer is provided between the housing and the thermoelectric power generation module.

9. The anti-dry-burning probe as described in claim 8, characterized in that, The thermoelectric power generation module includes an annular panel and power generation units. The annular panel is coated with a heat-conducting layer on the side facing the housing. Multiple power generation units are evenly distributed on the side of the heat-conducting layer facing the housing. A heat insulation layer is located between the power generation units and the housing. The side of the power generation units facing the heat insulation layer is coated with a heat-conducting layer.

10. The anti-dry-burning probe as described in claim 5, characterized in that, The anti-dry-burning probe also includes a fastener located at the end of the housing away from the cookware and positioning the thermoelectric generator module on the side of the housing via the fastener.

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