Cooking equipment and its humidity detection, humidity control devices and methods

Abstract

This disclosure provides a cooking appliance and its humidity detection, humidity control device and method. The control method humidifies the cooking appliance by activating its steam generator, acquiring first temperature data from a temperature sensor on the air guide plate and second temperature data from a temperature sensor inside the cavity, obtaining the actual humidity range inside the cavity, and then determining whether the actual humidity range inside the cavity is within a set humidity mode. If not, a target control command is generated to adjust the current operating time of the steam generator to the target operating time, and the actual humidity range inside the cavity is reset until it is within the set humidity mode. This disclosure achieves humidity detection and closed-loop control in the cooking appliance at a lower cost, improving the accuracy of humidity control.

Description

Technical Field

[0001] This disclosure relates to the field of smart kitchen appliances technology, and in particular to a cooking device and its humidity detection, humidity control device and method. Background Technology

[0002] As is well known, people need to control the humidity of cooking equipment during cooking. Current cooking equipment relies on humidity sensors for humidity control, but because cooking equipment operates at high temperatures, these sensors cannot directly detect the humidity within the cavity. Furthermore, high-temperature resistant humidity sensors are expensive, making the cost too high. In addition, for cooking equipment with lower humidity control accuracy requirements, most use empirical open-loop control methods, which have low precision and cannot automatically correct deviations.

[0003] Public content

[0004] The technical problem to be solved by this disclosure is to overcome the shortcomings of existing cooking equipment in terms of high cost, low control accuracy, and inability to automatically correct deviations in humidity control. The purpose is to provide a low-cost closed-loop feedback solution that can provide the approximate range of humidity. Specifically, a cooking equipment and its humidity detection, humidity control device and method are provided.

[0005] This disclosure solves the above-mentioned technical problems through the following technical solution:

[0006] According to a first aspect of this disclosure, a humidity detection device for a cooking appliance is provided, the humidity detection device comprising: an air guide plate, a main controller, and a first temperature sensor and a second temperature sensor electrically connected to the main controller;

[0007] The air guide plate is located on the main structure of the cooking equipment and is connected to the space outside the cooking equipment;

[0008] The first temperature sensor is located at a preset position on the air guide plate, and the preset position is a set distance away from the air outlet of the cooking device;

[0009] The second temperature sensor is located inside the cavity of the cooking device;

[0010] The main controller is used to obtain the actual humidity range in the inner cavity based on the first temperature data collected by the first temperature sensor and the second temperature data collected by the second temperature sensor.

[0011] Preferably, the main controller is further configured to determine a first temperature difference based on the second temperature data and the first temperature data at the same acquisition time.

[0012] A temperature difference trend chart is constructed based on several first temperature difference values ​​at different acquisition times.

[0013] Based on the difference between the first temperature difference values ​​at any two adjacent acquisition times, several second temperature difference values ​​are obtained.

[0014] Based on the aforementioned several second temperature differences, a cooling rate trend graph is constructed;

[0015] The actual humidity range in the inner cavity is determined based on the temperature difference trend graph and the cooling rate trend graph.

[0016] Preferably, the main controller is further configured to, when all the second temperature differences in the cooling rate trend graph are less than the first preset value and the second temperature differences show a decreasing state, the actual humidity range in the inner cavity is the first humidity range;

[0017] When the cooling rate trend graph shows that the second temperature difference is not less than the first preset value, the second temperature difference is decreasing, and the first temperature difference in the temperature difference trend graph is increasing, the actual humidity range in the inner cavity is the second humidity range.

[0018] When the cooling rate trend graph shows that the second temperature difference is not less than the first preset value, the second temperature difference is decreasing, and the first temperature difference in the temperature difference trend graph is decreasing, the actual humidity range in the inner cavity is the third humidity range.

[0019] The humidity ranges corresponding to the first humidity range, the second humidity range, and the third humidity range increase sequentially.

[0020] According to a second aspect of this disclosure, a humidity control device for a cooking appliance is provided, the humidity control device being implemented based on the humidity detection device described in the first aspect of this disclosure.

[0021] According to a third aspect of this disclosure, a humidity control method for a cooking appliance is provided, the humidity control method being implemented based on the humidity control device described in the second aspect of this disclosure, wherein the humidity detection device is electrically connected to the steam generator of the cooking appliance;

[0022] The humidity control method includes:

[0023] Control the start of the steam generator and set the preset humidification duration;

[0024] The humidity detection device is used to obtain the actual humidity range in the inner cavity;

[0025] Based on the actual humidity range, determine whether the set humidity mode is active;

[0026] If not, a target control command is generated to adjust the current operating time of the steam generator to the target operating time, and the step of obtaining the actual humidity range in the inner cavity is re-executed until the actual humidity range in the inner cavity is within the set humidity mode.

[0027] Preferably, the actual humidity range in the inner cavity includes a first humidity range, a second humidity range, and a third humidity range;

[0028] The first humidity range corresponds to the first humidity mode;

[0029] The second humidity range corresponds to the second humidity mode;

[0030] The third humidity range corresponds to the third humidity mode;

[0031] The humidity ranges corresponding to the first humidity mode, the second humidity mode, and the third humidity mode increase sequentially.

[0032] Preferably, when the set humidity mode is the first humidity mode, determining whether the set humidity mode is in effect based on the actual humidity range includes:

[0033] If the actual humidity range is not within the first humidity range, it is determined that the system is not in the set humidity mode.

[0034] The step of generating a target control command to adjust the current operating time of the steam generator to a target operating time includes:

[0035] Generate a first control command to shorten the operating time of the steam generator to a first target operating time.

[0036] Preferably, when the set humidity mode is the second humidity mode, determining whether the set humidity mode is in effect based on the actual humidity range includes:

[0037] If the actual humidity range is not within the second humidity range, it is determined that the system is not in the set humidity mode.

[0038] The step of generating a target control command to adjust the current operating time of the steam generator to a target operating time includes:

[0039] Generate a second control command to shorten the operating time of the steam generator to a second target operating time;

[0040] or,

[0041] A third control command is generated to extend the operating time of the steam generator to a third target operating time.

[0042] Preferably, when the set humidity mode is the third humidity mode, determining whether the set humidity mode is in effect based on the actual humidity range includes:

[0043] If the actual humidity range is not within the third humidity range, it is determined that the system is not in the set humidity mode.

[0044] The step of generating a target control command to adjust the current operating time of the steam generator to a target operating time includes:

[0045] A fourth control command is generated to extend the operating time of the steam generator to a fourth target operating time.

[0046] According to a fourth aspect of this disclosure, a cooking apparatus is provided, which includes the humidity control device described in the second aspect of this disclosure.

[0047] Based on common knowledge in the field, the preferred conditions described can be combined arbitrarily to obtain the preferred embodiments of this disclosure.

[0048] The positive improvement of this disclosure is that, for steam ovens where humidity accuracy requirements are not very high, by adding a temperature sensor to the air guide plate, the actual humidity value in the cavity can be deduced based on the collected temperature value. By using a lower-cost temperature sensor to replace the expensive humidity sensor for humidity detection in the cooking equipment, humidity detection and closed-loop control in the cooking equipment can be achieved at a lower cost, thus improving the accuracy of humidity control. Attached Figure Description

[0049] Figure 1 This is a schematic diagram of the humidity detection device of a cooking apparatus in one embodiment of the present disclosure;

[0050] Figure 2 This is a first structural schematic diagram of the humidity detection device of a cooking apparatus in one embodiment of the present disclosure;

[0051] Figure 3 This is a schematic diagram of the second structure of the humidity control device of a cooking apparatus in one embodiment of the present disclosure;

[0052] Figure 4 This is a schematic flowchart of a humidity control method for a cooking device according to an embodiment of the present disclosure. Detailed Implementation

[0053] The present disclosure is further illustrated below by way of embodiments, but the present disclosure is not limited to the scope of the embodiments described herein.

[0054] Currently, humidity control in cooking equipment is achieved through humidity sensors. However, high-temperature resistant humidity sensors are expensive and costly. Using empirical methods for open-loop control of cooking equipment with low humidity control accuracy results in low control accuracy and an inability to automatically correct deviations.

[0055] In view of this, the present disclosure provides a cooking device and a humidity detection, humidity control device and method thereof to solve the problems of high cost, low control accuracy and inability to automatically correct deviations in humidity control of cooking devices.

[0056] See Figure 1-3 In one specific embodiment of this disclosure, a humidity detection device for a cooking appliance is provided, such as... Figure 1 As shown, the humidity detection device includes: a main controller 100, an air guide plate 200, a first temperature sensor 300, and a second temperature sensor 400. Both the first temperature sensor 300 and the second temperature sensor 400 are electrically connected to the main controller 100. The air guide plate 200 is mounted on the main structure of the cooking equipment and communicates with the space outside the cooking equipment. The first temperature sensor 300 is located at a preset position on the air guide plate, and this preset position is a set distance from the air outlet of the cooking equipment. The second temperature sensor 400 is located in the inner cavity of the cooking equipment. The main controller 100 is used to obtain the actual humidity range in the inner cavity based on the first temperature data collected by the first temperature sensor 300 and the second temperature data collected by the second temperature sensor 400.

[0057] Since different humid gases cool down at different rates in the same environment, the cooling rate can be fed back by detecting the temperature difference after passing through a fixed path by two temperature sensors at different locations in a fixed environment. The humidity value can then be deduced from the cooling rate.

[0058] In one specific embodiment, the air guide plate adjusts the airflow direction to discharge the hot air in the inner cavity into the air according to a preset flow path. To obtain a temperature difference, the first temperature sensor 300 needs to be placed as far away from the outlet of the air guide plate as possible. For example, if the outlet of the air guide plate is located at the upper right corner of the air guide plate, then the first temperature sensor is placed at the lower left corner of the air guide plate. This disclosure does not specifically limit the position of the first temperature sensor 300, as long as the temperature value collected by the first temperature sensor 300 can form a temperature difference with the second temperature value collected by the second temperature sensor 400. The larger the temperature difference, the more accurate the actual humidity range in the inner cavity will be.

[0059] In one specific embodiment, the first temperature sensor 300 is used to obtain the cold end gas temperature value L after passing through a preset flow path, and the second temperature sensor 400 is used to obtain the actual detected temperature value N in the inner cavity. Then, the cooling rate is obtained based on the cold end gas temperature value L and the actual detected temperature value N in the inner cavity, and the actual humidity range in the inner cavity is determined based on the cooling rate.

[0060] In one specific embodiment, the main controller is further configured to: determine a first temperature difference based on the second temperature data and the first temperature data at the same acquisition time; construct a temperature difference trend graph based on several first temperature differences at different acquisition times; obtain several second temperature differences based on the difference between the first temperature differences at any two adjacent acquisition times; construct a cooling rate trend graph based on the several second temperature differences; and determine the actual humidity range in the inner cavity based on the temperature difference trend graph and the cooling rate trend graph.

[0061] In one specific embodiment, the cold end gas temperature value L at the current acquisition time T is obtained by using the first temperature sensor 300 and the second temperature sensor 400, respectively. T and the actual detected temperature value N in the inner cavity T And determine the first temperature difference T at the current moment. T =N T -L T Similarly, the cold end gas temperature value L at the previous acquisition time T-1 is obtained using the first temperature sensor 300 and the second temperature sensor 400, respectively. T-1 and the actual detected temperature value N in the inner cavity T-1 And determine the first temperature difference T at the previous moment. T-1 =N T-1 -L T-1 By analogy, multiple first temperature difference values ​​from time 0 to T can be obtained, thus constructing a temperature difference trend graph; furthermore, based on the first temperature difference value T at the current time... T The first temperature difference T from the previous moment T-1 The second temperature difference value R at the current moment can be obtained. T =T T -T T-1 By analogy, multiple second temperature differences from time 1 to T can be obtained, thereby constructing a temperature difference trend graph. Then, based on the trends of the temperature difference trend graph and the cooling rate trend graph, the actual humidity range in the inner cavity of the cooking equipment can be determined.

[0062] In one specific embodiment, the main controller is further configured to: when all the second temperature differences in the cooling rate trend graph are less than the first preset value and the second temperature differences are decreasing, the actual humidity range in the inner cavity is a first humidity range; when there are second temperature differences in the cooling rate trend graph that are not less than the first preset value, the second temperature differences are decreasing, and the first temperature difference in the temperature difference trend graph is increasing, the actual humidity range in the inner cavity is a second humidity range; when there are second temperature differences in the cooling rate trend graph that are not less than the first preset value, the second temperature differences are decreasing, and the first temperature difference in the temperature difference trend graph is decreasing, the actual humidity range in the inner cavity is a third humidity range; wherein the humidity ranges corresponding to the first humidity range, the second humidity range, and the third humidity range increase sequentially.

[0063] At a constant temperature, at a certain critical point of water content, the higher the humidity value, the greater the dissipation coefficient, the greater the temperature difference, that is, the greater the cooling rate. When this critical point of water content is exceeded, the opposite result will occur until it is completely saturated and then tends to stabilize. Based on this, this disclosure divides humidity into three levels: low humidity, medium humidity, and high humidity. The area before the critical point of water content is low humidity, the area near the critical point of water content is medium humidity, and the area after the critical point of water content is high humidity.

[0064] In one specific implementation, the main controller monitors the cooling rate trend in the cooling rate trend graph and the temperature difference trend in the temperature difference trend graph in real time. When the cooling rate is less than a first preset value and shows a decreasing trend, it indicates that the actual humidity range in the cavity is in a low humidity state and the humidity will not increase further. When the cooling rate exceeds the first preset value and shows a decreasing trend, it indicates that the actual humidity range in the cavity has passed the low humidity state and is moving towards a medium-high humidity state. At this time, it is necessary to determine whether the actual humidity range in the cavity is in a medium humidity state or a high humidity state by judging the trend of the temperature difference. If the temperature difference is increasing, it indicates that the actual humidity range in the cavity is in a medium humidity state. If the temperature difference is decreasing, it indicates that the actual humidity range in the cavity is in a high humidity state.

[0065] In one feasible embodiment, the first preset value is 140°C / s.

[0066] In this embodiment, the hot air in the inner cavity is discharged into the air according to a preset flow path by the air guide plate. The temperature value of the cold end gas is collected by the first temperature sensor 300, and the actual detected temperature value in the inner cavity is obtained by the second temperature sensor 400 to obtain the cooling rate, thereby obtaining the actual humidity range in the inner cavity. This realizes the detection of humidity in the cooking equipment by replacing the more expensive humidity sensor with a lower cost temperature sensor.

[0067] In one specific embodiment, a humidity control device for a cooking appliance is also provided, which is implemented based on the humidity detection device described above in this disclosure.

[0068] In this embodiment, by setting a low-cost humidity detection device in the humidity control device, the humidity of the cooking equipment is controlled based on the humidity value detected by the humidity detection device. This reduces the cost of the cooking equipment while ensuring its humidity control function, thus promoting production development.

[0069] See Figure 4 In a specific embodiment of this disclosure, a humidity control method for a cooking device is also provided. The humidity control method is implemented based on the humidity control device described above in this disclosure, wherein the humidity detection device is electrically connected to the steam generator of the cooking device.

[0070] The humidity control method includes:

[0071] S1: Control the start of the steam generator and set the preset humidification duration;

[0072] S2: Use the humidity detection device to obtain the actual humidity range in the inner cavity;

[0073] S3: Determine whether the set humidity mode is in effect based on the actual humidity range.

[0074] S4: If not, generate a target control command to adjust the current working time of the steam generator to the target working time, and re-execute the step of obtaining the actual humidity range in the inner cavity until the actual humidity range in the inner cavity is in the set humidity mode.

[0075] In one specific embodiment, the steam generator of the cooking equipment is started to humidify for a preset time. After humidifying for L seconds, the actual humidity range in the inner cavity is obtained, and it is determined whether the current humidification time can meet the set humidity mode. If not, the working time of the steam generator is adjusted in time so that the actual humidity range in the inner cavity can meet the set humidity mode.

[0076] In one specific embodiment, the actual humidity range in the inner cavity includes a first humidity range, a second humidity range, and a third humidity range;

[0077] The first humidity range corresponds to the first humidity mode;

[0078] The second humidity range corresponds to the second humidity mode;

[0079] The third humidity range corresponds to the third humidity mode;

[0080] The humidity ranges corresponding to the first humidity mode, the second humidity mode, and the third humidity mode increase sequentially.

[0081] In one feasible embodiment, the first humidity mode is a low humidity mode, the second humidity mode is a medium humidity mode, and the third humidity mode is a high humidity mode.

[0082] In one specific embodiment, when the set humidity mode is the first humidity mode, step S3 includes:

[0083] S311: If the actual humidity range is not within the first humidity range, then it is determined that the humidity setting mode is not in use;

[0084] S312: If the actual humidity range is within the first humidity range, then it is determined that the humidity setting mode is in effect.

[0085] Following step S311, step S4 includes:

[0086] S411: Generate a first control command to shorten the operating time of the steam generator to a first target operating time.

[0087] Specifically, if the actual humidity range is not within the first humidity range, it indicates that the actual humidity range in the inner cavity is already in a medium-high humidity state. In this case, it is necessary to shorten the working time of the steam generator. The way to shorten the working time of the steam generator can be to adjust the working time of the steam generator to a certain working time, or to shorten the working time of the steam generator by a preset amount of time. This disclosure does not make specific limitations on this. After shortening the working time of the steam generator, the actual humidity range in the inner cavity of the cooking equipment is obtained again to determine whether it is in the set humidity mode. If not, the working time of the steam generator is adjusted again until the humidity range of the cooking equipment is in the set humidity mode.

[0088] In one specific embodiment, when the set humidity mode is the second humidity mode, step S3 includes:

[0089] S321: If the actual humidity range is not within the second humidity range, then it is determined that the set humidity mode is not in use;

[0090] S322: If the actual humidity range is within the second humidity range, then it is determined that the set humidity mode is in operation.

[0091] Following step S321, step S4 includes:

[0092] S421: Generate a second control command to shorten the operating time of the steam generator to a second target operating time;

[0093] or,

[0094] A third control command is generated to extend the operating time of the steam generator to a third target operating time.

[0095] Specifically, if the actual humidity range is not within the second humidity range, it is necessary to determine whether the actual humidity range in the inner cavity is in a low-humidity or high-humidity state to determine whether to extend or shorten the working time of the steam generator. If the current actual humidity range in the inner cavity is low, it indicates that the working time of the steam generator is insufficient and needs to be extended. If the current actual humidity range in the inner cavity is high, it indicates that the working time of the steam generator is too long and needs to be shortened. Extending or shortening the working time of the steam generator can be done by adjusting the working time to a certain duration, or by extending or shortening the working time by a preset range; this disclosure does not specifically limit this. After extending or shortening the working time of the steam generator, the actual humidity range in the inner cavity of the cooking equipment is re-acquired to determine whether it is in the set humidity mode. If not, the working time of the steam generator is adjusted again until the humidity range of the cooking equipment is in the set humidity mode.

[0096] In one specific embodiment, when the set humidity mode is the third humidity mode, step S3 includes:

[0097] S331: If the actual humidity range is not within the third humidity range, then it is determined that the humidity setting mode is not in use;

[0098] S332: If the actual humidity range is within the third humidity range, then it is determined that the set humidity mode is in operation.

[0099] Following step S331, step S4 includes:

[0100] S431: Generate a fourth control command to extend the operating time of the steam generator to a fourth target operating time.

[0101] Specifically, if the actual humidity range is not within the third humidity range, it indicates that the actual humidity range in the inner cavity is already in a low-to-medium humidity state. In this case, it is necessary to extend the working time of the steam generator. The way to extend the working time of the steam generator can be to adjust the working time of the steam generator to a certain working time, or to extend the working time of the steam generator by a preset amount of time. This disclosure does not specifically limit this. After extending the working time of the steam generator, the actual humidity range in the inner cavity of the cooking equipment is re-acquired to determine whether it is in the set humidity mode. If not, the working time of the steam generator is adjusted again until the humidity range of the cooking equipment is in the set humidity mode.

[0102] In this embodiment, by adding a temperature sensor to the air guide plate, the actual humidity value in the inner cavity is deduced based on the collected temperature value. The lower-cost temperature sensor replaces the expensive humidity sensor for humidity detection in the cooking equipment, thereby achieving humidity detection and closed-loop control in the cooking equipment at a lower cost and improving the accuracy of humidity control.

[0103] In one specific embodiment, the mechanism by which this disclosure obtains the actual humidity range in the inner cavity using first and second temperature data is as follows: 1. Different humidity gases have different cooling rates in the same environment, and the humidity value is inferred by obtaining the cooling rate; 2. The cooling rate is fed back by detecting the temperature difference after passing through a fixed path by two temperature probes at different positions in a fixed environment; 3. Under a certain temperature, at a certain water content critical point, the higher the humidity value, the greater the dissipation coefficient, the greater the temperature difference, that is, the greater the cooling rate; when this water content critical point is exceeded, the opposite result will occur; until it is completely saturated, it tends to stabilize.

[0104] The humidity detection device disclosed herein comprises: an air guide plate for discharging hot air from the cavity into the air; a cold end temperature sensor for detecting the gas temperature at the cold end of the air guide plate; a cavity temperature sensor for detecting the gas temperature in the cavity; and a main controller for analyzing the values ​​detected by the two temperature sensors to obtain the humidity value. The two temperature sensors are placed at positions that create a temperature difference, i.e., to detect the cooling rate, so they should be placed as far apart as possible, provided there is sufficient space.

[0105] The humidity detection parameters in this disclosure are defined as follows: actual cavity detection temperature N (NowTempDetect), time value T seconds, cold junction temperature sensor temperature value L (LowTempValue), temperature difference value T (TempDifference), temperature difference trend R (TempDifferenceRate); temperature difference value T at time T-1. T-1 =N T-1 –L T-1 The temperature difference at time T. T =N T –L T Temperature difference trend at time T R T =T T -T T-1 The critical point for water content is M; the humidity here is divided into three levels: low humidity, medium humidity, and high humidity. Before M is low humidity, near M is medium humidity, and after M is high humidity.

[0106] The humidity control process for cooking equipment disclosed herein is as follows:

[0107] Controlling low humidity: After starting operation, the steam generator is turned on for a fixed period of time (X) for humidification within a localized time frame. As humidity increases, T... T-1 T T and R T It will gradually increase; if R increases after L seconds T If X does not reach its maximum value and shows a decreasing trend, it is considered that X meets the low humidity control requirements, and the steam generator's operating time is X. If X reaches its maximum value after L seconds and then shows a decreasing trend, it indicates that X is too large, and the steam generator's operating time needs to be reduced, i.e., X is adjusted to X / 2. If R... T If the maximum value is not reached and a decreasing trend appears, it is considered that X / 2 meets the low humidity control requirements; at this time, the steam generator can operate for X / 2 hours; and so on, until a suitable operating time is reached.

[0108] Humidity control: After startup, the steam generator is turned on for a fixed period of time (X) for humidification within a localized time frame. As the humidity increases, T... T -1,T T and R T It will gradually increase; if R increases after L seconds T It reaches its maximum value and then shows a decreasing trend, and after 2L, T T -1,T T It is still increasing, R T If the decreasing trend slows down, it indicates that X meets the medium humidity control requirement, then the steam generator operating time can be defined as X; if T after 2L T-1 T T The gradual decrease indicates that the humidity level has passed the medium humidity level and is approaching the high humidity level. Therefore, adjust X to X / 2, and then adjust T after 3L. T-1 T T It is still increasing, R T If the decreasing trend slows down, it means that X / 2 meets the medium humidity control, so the working time of the steam generator can be defined as X / 2; and so on, until a suitable working time is reached.

[0109] Controlling high humidity: After starting operation, the steam generator is turned on for a fixed period of time (X) for humidification within a localized time frame. As humidity increases, T... T-1， T T and R T It will gradually increase; if R increases after L seconds T Reaching its maximum value and then showing a decreasing trend indicates entering the medium humidity stage. If T reaches its maximum value after 2 seconds... T-1， T T The gradual decrease indicates that the humidity level has passed the medium-humidity stage and is approaching high-humidity. The steam generator's operating time should be X; and after 2L, T... T-1， T T It is still increasing, R TIf the decreasing trend slows down, it means that X cannot meet the high humidity requirement, so X is adjusted to 2X. If T is 3L seconds later... T-1 T T Gradually decreasing the humidity indicates that the humidity level has passed medium and is approaching high, at which point the steam generator should operate for 2X hours; continue in this manner until the appropriate operating time is reached.

[0110] In one specific embodiment, a cooking device is also provided, which includes the humidity control device described above in this disclosure.

[0111] In this embodiment, by setting a low-cost humidity detection and closed-loop humidity control device in the cooking equipment, the humidity of the cooking equipment is controlled based on the humidity value detected by the humidity detection device. This reduces the cost of the cooking equipment while ensuring its humidity control function, thus promoting production development.

[0112] While specific embodiments of this disclosure have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this disclosure 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 this disclosure, but all such changes and modifications fall within the scope of protection of this disclosure.

Claims

1. A humidity detection device for cooking equipment, characterized in that, The humidity detection device includes: an air guide plate, a main controller, and a first temperature sensor and a second temperature sensor electrically connected to the main controller; The air guide plate is located on the main structure of the cooking equipment and is connected to the space outside the cooking equipment; The first temperature sensor is located at a preset position on the air guide plate, and the preset position is a set distance away from the air outlet of the cooking device; The second temperature sensor is located inside the cavity of the cooking device; The main controller is used to obtain the actual humidity range in the cavity based on the first temperature data collected by the first temperature sensor and the second temperature data collected by the second temperature sensor. The main controller is also used to determine a first temperature difference based on the second temperature data and the first temperature data at the same acquisition time. A temperature difference trend chart is constructed based on several first temperature difference values ​​at different acquisition times. Based on the difference between the first temperature difference values ​​at any two adjacent acquisition times, several second temperature difference values ​​are obtained. Based on the aforementioned several second temperature differences, a cooling rate trend graph is constructed; The actual humidity range in the inner cavity is determined based on the temperature difference trend graph and the cooling rate trend graph. Wherein, when all the second temperature differences in the cooling rate trend graph are less than the first preset value, and the second temperature differences show a decreasing state, the actual humidity range in the inner cavity is the first humidity range; When the cooling rate trend graph shows that the second temperature difference is not less than the first preset value, the second temperature difference is decreasing, and the first temperature difference in the temperature difference trend graph is increasing, the actual humidity range in the inner cavity is the second humidity range. When the cooling rate trend graph shows that the second temperature difference is not less than the first preset value, the second temperature difference is decreasing, and the first temperature difference in the temperature difference trend graph is decreasing, the actual humidity range in the inner cavity is the third humidity range. The humidity ranges corresponding to the first humidity range, the second humidity range, and the third humidity range increase sequentially.

2. A humidity control device for a cooking appliance, characterized in that, The humidity control device includes the humidity detection device as described in claim 1.

3. A humidity control method for a cooking appliance, characterized in that, The humidity control method is implemented based on the humidity control device as described in claim 2, wherein the humidity detection device is electrically connected to the steam generator of the cooking equipment; The humidity control method includes: Control the start of the steam generator and set the preset humidification duration; The humidity detection device is used to obtain the actual humidity range in the inner cavity; Based on the actual humidity range, determine whether the set humidity mode is active; If not, a target control command is generated to adjust the current operating time of the steam generator to the target operating time, and the step of obtaining the actual humidity range in the inner cavity is re-executed until the actual humidity range in the inner cavity is within the set humidity mode.

4. The humidity control method according to claim 3, characterized in that, The actual humidity range in the inner cavity includes a first humidity range, a second humidity range, and a third humidity range; The first humidity range corresponds to the first humidity mode; The second humidity range corresponds to the second humidity mode; The third humidity range corresponds to the third humidity mode; The humidity ranges corresponding to the first humidity mode, the second humidity mode, and the third humidity mode increase sequentially.

5. The humidity control method according to claim 4, characterized in that, When the set humidity mode is the first humidity mode, determining whether the set humidity mode is in effect based on the actual humidity range includes: If the actual humidity range is not within the first humidity range, it is determined that the system is not in the set humidity mode. The step of generating a target control command to adjust the current operating time of the steam generator to a target operating time includes: Generate a first control command to shorten the operating time of the steam generator to a first target operating time.

6. The humidity control method according to claim 4, characterized in that, When the set humidity mode is the second humidity mode, determining whether the set humidity mode is in effect based on the actual humidity range includes: If the actual humidity range is not within the second humidity range, it is determined that the system is not in the set humidity mode. The step of generating a target control command to adjust the current operating time of the steam generator to a target operating time includes: Generate a second control command to shorten the operating time of the steam generator to a second target operating time; or, A third control command is generated to extend the operating time of the steam generator to a third target operating time.

7. The humidity control method according to claim 4, characterized in that, When the set humidity mode is the third humidity mode, determining whether the set humidity mode is in effect based on the actual humidity range includes: If the actual humidity range is not within the third humidity range, it is determined that the system is not in the set humidity mode. The step of generating a target control command to adjust the current operating time of the steam generator to a target operating time includes: A fourth control command is generated to extend the operating time of the steam generator to a fourth target operating time.

8. A cooking device, characterized in that, Includes the humidity control device as described in claim 2.

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