Dry burning prevention control method of evaporator and cooking equipment
By using temperature sensors in equipment such as steam ovens to monitor evaporator temperature and calculate slope parameters, the problem of evaporator water level detection failure was solved, enabling anti-dry-burning control of the evaporator and improving the safety and reliability of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- HANGZHOU ROBAM APPLIANCES CO LTD
- Filing Date
- 2026-03-09
- Publication Date
- 2026-04-10
AI Technical Summary
In traditional cooking equipment such as steam ovens, the water level detection method of the evaporator is prone to failure, which can lead to dry burning of the evaporator, posing a safety hazard and failing to meet the reliability requirements for preventing dry burning.
Temperature sensors are used to monitor the temperature parameters of the evaporator, calculate the slope parameters, determine the working status of the evaporator based on the temperature and slope parameters, and determine the water replenishment strategy based on the status to avoid dry burning.
By monitoring and calculating the temperature slope in real time, the evaporator status can be accurately determined, water can be added in time, the evaporator can be prevented from burning dry, and the reliability of the equipment in preventing dry burning can be improved.
Smart Images
Figure CN121828682A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of smart home, in particular to a dry-burning prevention control method of an evaporator and a cooking device. BACKGROUND
[0002] Generally, for cooking devices with an evaporator and a water tank, such as a steam oven, a household steam oven, etc., the evaporator generates steam by heating water to realize the steam cooking function, and during the cooking process, water needs to be continuously supplied to maintain a safe water level and prevent the evaporator from dry burning.
[0003] In the traditional technical solution, a dry reed and a magnetic float are often used in combination to detect the water level, for example, the float triggers the on-off of the dry reed by lifting and lowering, however, in the high-temperature steam environment during the cooking process, the float is prone to jamming and the dry reed is prone to oxidation failure, which causes the water level detection to fail, and once the water level detection fails, the evaporator will continue to dry burn, thereby causing the heating pipe to burst and the equipment to catch fire, etc. serious accidents, therefore, the traditional water level detection method cannot meet the reliability requirements of the steam oven and other cooking devices for dry-burning prevention. SUMMARY
[0004] Therefore, the purpose of the present application is to provide a dry-burning prevention control method of an evaporator and a cooking device to alleviate the above technical problems.
[0005] In a first aspect, the present application provides a dry-burning prevention control method of an evaporator, applied to a cooking device configured with an evaporator and a water tank, the water tank supplies water to the evaporator, the evaporator includes a heating unit and a temperature sensor arranged close to the heating unit, the method comprising: in response to a start operation of the evaporator, monitoring a temperature parameter of the evaporator by the temperature sensor; calculating a slope parameter corresponding to the temperature parameter; determining a working state of the evaporator according to the temperature parameter and the slope parameter; determining a water supply strategy of the evaporator based on the working state.
[0006] In combination with the first aspect, the present application provides a first possible implementation manner of the first aspect, wherein the step of monitoring the temperature parameter of the evaporator comprises: acquiring the temperature parameter at a pre-set time interval, the temperature parameter carrying a time stamp; generating a temperature curve corresponding to the evaporator based on the time stamp and the temperature parameter; and calculating the slope parameter corresponding to the temperature parameter based on the temperature curve; wherein the temperature curve is a curve of the temperature parameter changing with time.
[0007] With reference to the first aspect, in a second possible implementation of the first aspect, the step of determining the working state of the evaporator according to the temperature parameter and the slope parameter comprises: generating a state combination comprising the temperature parameter and the slope parameter; and determining the working state of the evaporator based on the state combination.
[0008] With reference to the second possible implementation of the first aspect, in a third possible implementation of the first aspect, the step of determining the working state of the evaporator based on the state combination comprises: determining a temperature range to which the temperature parameter included in the state combination belongs, and a slope range to which the slope parameter belongs; and determining the working state of the evaporator according to the temperature range and the slope range.
[0009] With reference to the third possible implementation of the first aspect, in a fourth possible implementation of the first aspect, the step of determining the working state of the evaporator according to the temperature range and the slope range comprises: if the temperature parameter is less than or equal to a preset first temperature threshold, and the slope parameter is less than or equal to a preset first slope threshold, determining that the working state of the evaporator is a normal working state; wherein the first temperature threshold is a minimum temperature required for the evaporator to generate steam; if the temperature parameter is greater than the first temperature threshold and less than a preset second temperature threshold, and the slope parameter is less than a second slope threshold, determining that the working state of the evaporator is a boiling working state; wherein the second temperature threshold is greater than the first temperature threshold, and the second slope threshold is greater than the first slope threshold; if the temperature parameter is greater than the first temperature threshold and less than the preset second temperature threshold, and the slope parameter is greater than the second slope threshold, determining that the working state of the evaporator is a dry-burning pre-warning state; and if the temperature parameter is greater than the second temperature threshold, and the slope parameter is greater than the second slope threshold, determining that the working state of the evaporator is a dry-burning state.
[0010] With reference to the fourth possible implementation of the first aspect, in a fifth possible implementation of the first aspect, the step of determining the water replenishment strategy of the evaporator based on the working state comprises: if it is monitored that the temperature parameter is greater than the second temperature threshold, determining whether a current mode of the evaporator is a descaling mode; if the current mode of the evaporator is the descaling mode, monitoring, in the descaling mode, whether the slope parameter is greater than the second slope threshold; if yes, determining that the working state is a dry-burning state, and determining that the water replenishment strategy is a high-speed water replenishment strategy; and performing the high-speed water replenishment strategy to replenish water for the evaporator.
[0011] With reference to the fourth possible implementation manner of the first aspect, the embodiments of the present application provide a sixth possible implementation manner of the first aspect, wherein the step of determining the water replenishment strategy of the evaporator based on the working state further comprises: if it is monitored that the temperature parameter is greater than the second temperature threshold and it is determined that the current mode of the evaporator is not the descaling mode, obtaining the steam function mode of the cooking device; controlling the cooking device to operate based on the steam function mode, and monitoring whether the slope parameter is greater than the second slope threshold; if yes, determining that the working state is the dry burning state, and the water replenishment strategy is the high-speed water replenishment strategy; and executing the high-speed water replenishment strategy to replenish water for the evaporator.
[0012] With reference to the fourth possible implementation manner of the first aspect, the embodiments of the present application provide a seventh possible implementation manner of the first aspect, wherein the step of determining the water replenishment strategy of the evaporator based on the working state further comprises: if it is determined that the working state of the evaporator is the dry burning warning state, determining that the water replenishment strategy is the low-speed water replenishment strategy; and executing the low-speed water replenishment strategy to replenish water for the evaporator.
[0013] With reference to the fifth or sixth possible implementation manner of the first aspect, the embodiments of the present application provide an eighth possible implementation manner of the first aspect, wherein the method further comprises: in the process of replenishing water for the evaporator, stopping replenishing water for the evaporator in response to the evaporator satisfying a stop water replenishment condition; wherein the stop water replenishment condition is determined when the temperature parameter drops to a preset water replenishment control temperature parameter within a preset time range, or the water replenishment amount for the evaporator reaches a preset water replenishment threshold.
[0014] In the second aspect, the embodiments of the present application further provide a cooking device, which is configured with a controller, a water tank and an evaporator, the water tank supplies water for the evaporator, the evaporator comprises a heating unit and a temperature sensor arranged close to the heating unit, and the controller is configured to execute the method as described in the first aspect.
[0015] The embodiments of the present application have the following beneficial effects: The cooking device provided by the embodiments of the present application can monitor the temperature parameter of the evaporator through the temperature sensor in response to the start operation of the evaporator; calculate the slope parameter corresponding to the temperature parameter; determine the working state of the evaporator according to the temperature parameter and the slope parameter; determine the water replenishment strategy of the evaporator based on the working state, so as to replenish water for the evaporator in time under the corresponding working state and avoid the phenomenon of dry burning of the evaporator, thereby meeting the reliability requirement of the cooking device such as the steam oven for dry burning prevention.
[0016] Other features and advantages of the present application will be set forth in the descriptions that follow, and in part will be apparent from the description, or can be learned by practice of the application. The purposes and other advantages of the present application will be realized and attained by the structures particularly pointed out in the description, claims and drawings.
[0017] In order to make the above objectives, features and advantages of the present application more apparent, the following will describe a preferred embodiment in detail, and the accompanying drawings will be described as follows. BRIEF DESCRIPTION OF DRAWINGS
[0018] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description. Obviously, the drawings described in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.
[0019] Figure 1 A structural schematic diagram of an evaporator provided by the embodiment of the present application is shown in the figure. Figure 2 A three-dimensional structural schematic diagram of an evaporator provided by the embodiment of the present application is shown in the figure. Figure 3 A flow chart of a dry-burning prevention control method of an evaporator provided by the embodiment of the present application is shown in the figure. Figure 4 A flow chart of another dry-burning prevention control method of an evaporator provided by the embodiment of the present application is shown in the figure. Figure 5 A structural schematic diagram of a dry-burning prevention control device of an evaporator provided by the embodiment of the present application is shown in the figure. Figure 6 A structural schematic diagram of an electronic device provided by the embodiment of the present application is shown in the figure.
[0020] Figure legend: 100-heating unit; 101-outlet of evaporator; 102-heating device; 103-energizing wire of heating device; 104-temperature sensor; 105-wire of temperature sensor; 106-inlet of evaporator. DETAILED DESCRIPTION
[0021] In order to make the objectives, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the present application will be described in detail below in combination with the drawings. Obviously, the described embodiments are some embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.
[0022] At present, in order to avoid dry burning of cooking equipment such as steam oven with evaporator and water tank when the evaporator is running, water level detection is usually performed on the cooking equipment. The traditional water level detection method usually adopts a mechanical water level switch with a dry reed tube and a magnetic float. The working principle is that the float drives the internal magnet to trigger the on-off signal of the dry reed tube to control the water pump to supply water to the evaporator according to the water level state.
[0023] However, the traditional mechanical water level switch has low reliability. For example, the magnetic float is easily blocked by scale and impurities, resulting in misjudgment (e.g., still showing water when there is no water); the mechanical contact of the dry reed tube is easily aged and fails due to frequent operation (the typical service life is about 100,000 times); and has the disadvantage of insufficient precision, such as signal oscillation caused by float shaking when the water level fluctuates, which requires the addition of a delay filter circuit; in addition, the maintenance cost of the mechanical water level switch is high, and the float cavity needs to be cleaned regularly to prevent blockage, and the after-sales maintenance rate is high. At the same time, it also has the problem of poor environmental adaptability, and the high-temperature steam environment can also accelerate the oxidation of the contact, affecting the signal stability, and it is difficult to meet the reliability requirements of dry burning prevention.
[0024] Based on this, the anti-dry burning control method and cooking equipment of the evaporator provided by the embodiments of the present application can cancel the mechanical water level switch to improve the reliability requirements of the anti-dry burning scheme.
[0025] In order to facilitate the understanding of the present embodiment, first, a kind of anti-dry burning control method of evaporator disclosed by the present embodiment is introduced in detail.
[0026] In a possible implementation, the present embodiment provides an anti-dry burning control method of evaporator, applied to cooking equipment configured with evaporator and water tank, the water tank supplies water for the evaporator, and the evaporator includes a heating unit and a temperature sensor arranged close to the heating unit.
[0027] In order to facilitate understanding, Figure 1 A structure diagram of an evaporator is shown, and correspondingly Figure 2 A three-dimensional structure diagram of an evaporator is shown, wherein, in order to facilitate the description, Figure 1 And Figure 2 Only the structure related to the evaporator is shown in the above and
[0028] The heating unit is also referred to as a cavity of the evaporator or a metal shell of the evaporator, the heating device directly heats the heating unit, and in turn heats the water stored in the cavity of the evaporator, and the evaporator is generally a metal evaporator, the cavity of the evaporator stores a certain amount of water, one end of a water inlet of the evaporator is in communication with the cavity of the evaporator, and the other end is connected to a water pump, and when the water pump operates, water in a water tank is sent into the cavity of the evaporator. Further, the heating device in the embodiment of the present application is in the form of a metal wire connected in series in the power supply wire, and can be tightly attached to the shell of the evaporator by using a casting process, and when the power supply is turned on, heat can be generated to heat the water in the evaporator to achieve the purpose of generating steam. And the steam generated by the evaporator is transported into the cooking cavity through the above-mentioned gas outlet for cooking.
[0029] Further, the temperature sensor is in direct contact with the metal shell of the evaporator to detect the temperature parameter of the corresponding position in real time, and in order to adapt to the cooking environment of high-temperature steam, the power supply wire of the heating device and the wire of the temperature sensor generally use high-temperature-resistant wires, and the corresponding connectors use high-temperature-resistant connectors to realize effective data transmission.
[0030] In actual use, the temperature sensor can collect temperature parameters in real time during cooking, and the controller of the cooking equipment can use a microcontroller, such as an STM32 series microcontroller chip, to realize data collection and logical control, and the data collection frequency can be set in advance, for example, the temperature parameter is read once every 1 second to ensure the real-time of the data, and in addition, a plurality of parameter thresholds can be set to facilitate the execution of the anti-dry burning control method of the evaporator provided in the embodiment of the present application.
[0031] Further, in order to facilitate understanding, Figure 3 A flow chart of an anti-dry burning control method of an evaporator is shown, and the method comprises the following steps: Step S302, in response to a start operation of the evaporator, the temperature parameter of the evaporator is monitored by the temperature sensor; Step S304, the slope parameter corresponding to the temperature parameter is calculated; Step S306, the working state of the evaporator is determined according to the temperature parameter and the slope parameter; Step S308, the water replenishment strategy of the evaporator is determined based on the working state.
[0032] Generally, the operation process of the evaporator is a process of continuously generating steam, and the temperature of the evaporator is maintained in a dynamic balance range due to the continuous heat absorption caused by water evaporation. When the water in the evaporator gradually decreases to a water shortage or approaches a dry burning state, the temperature of the cavity of the evaporator will gradually rise, and the corresponding temperature change slope will gradually increase. Therefore, in the embodiment of the present application, the current working state of the evaporator can be determined by monitoring the temperature parameter and the corresponding slope parameter, such as normal working state, dry burning warning state and dry burning state, so that different water replenishment strategies are adopted for different states to prevent the evaporator from dry burning.
[0033] The evaporator dry burning prevention control method provided by the embodiment of the present application can respond to the start operation of the evaporator, monitor the temperature parameter of the evaporator through the temperature sensor, calculate the slope parameter corresponding to the temperature parameter, determine the working state of the evaporator according to the temperature parameter and the slope parameter, and determine the water replenishment strategy of the evaporator based on the working state, so as to replenish water to the evaporator in time under the corresponding working state and avoid the phenomenon of evaporator dry burning, thereby meeting the reliability requirements of cooking equipment such as steam ovens for dry burning prevention.
[0034] In actual use, the temperature parameter in the embodiment of the present application is actually the temperature of the metal shell of the evaporator monitored by the temperature sensor or the temperature of the heating unit shown in the above Figure 1 or Figure 2 When the temperature parameter is obtained, the temperature parameter collected by the temperature sensor can be obtained at a pre-set time interval, and the temperature parameter collected by the temperature sensor is determined as the temperature parameter of the evaporator.
[0035] Further, in order to facilitate the presentation of the temperature parameter and the slope parameter, when the temperature parameter of the evaporator is monitored, the temperature curve corresponding to the temperature parameter can be drawn synchronously, specifically, the temperature parameter can be obtained at a pre-set time interval, and the temperature parameter carries a time stamp; then the temperature curve corresponding to the evaporator is generated based on the time stamp and the temperature parameter; and the slope parameter corresponding to the temperature parameter is calculated based on the temperature curve; wherein the temperature curve is a curve of the temperature parameter changing with time, that is, the horizontal coordinate is time and the vertical coordinate is the temperature parameter, and when the slope parameter corresponding to the temperature parameter is calculated, the temperature difference can be calculated based on the temperature parameters obtained at adjacent two times, and the time difference of the adjacent two temperature parameters is determined according to the time stamp of the temperature parameter, and then the slope parameter is calculated according to the temperature difference and the time difference, and the calculation formula of the slope parameter can be expressed as: S=( 1) ; wherein S represents a slope parameter, Tn is a current temperature parameter, Tn-1 is a neighboring previous temperature parameter, is a time difference between the current temperature parameter and the neighboring previous temperature parameter based on the time stamp.
[0036] In actual use, when the evaporator is in different working states, the temperature ranges and slope ranges of the corresponding temperature parameters and slope parameters are different. For example, in a state where the evaporator normally generates steam, since water evaporation needs to absorb a certain amount of heat, the temperature parameter of the evaporator gradually increases, but there is no large jump, and the corresponding slope parameter is also in a certain relative stable value. When the water in the evaporator gradually decreases to near dry burning, the temperature parameter of the evaporator gradually increases, and the corresponding slope parameter also gradually increases, and the temperature curve has a significant rising process. When the evaporator is dry burning, the temperature parameter and the slope parameter have a significant rising process. Therefore, in the embodiment of the present application, when determining the working state of the evaporator, the temperature parameter and the slope parameter can be used to determine, specifically, a state combination including the temperature parameter and the slope parameter can be generated; and the working state of the evaporator is determined based on the state combination.
[0037] Further, when determining the working state of the evaporator, the temperature range to which the temperature parameter in the state combination belongs and the slope range to which the slope parameter belongs can be determined; and the working state of the evaporator is determined according to the temperature range and the slope range.
[0038] In actual use, for different temperature ranges or slope ranges, corresponding temperature thresholds and slope thresholds can be set in advance. For example, a first temperature threshold is set, which is used to represent the minimum temperature required for the evaporator to generate steam; a second temperature threshold can also be set, which is higher than the first temperature threshold, and the second temperature threshold is the temperature threshold when the temperature of the evaporator rises to the water boiling state in the evaporator. Usually, the second temperature threshold can also be called a dry burning temperature threshold. When the temperature of the evaporator rises to exceed the second temperature threshold, there is a risk of dry burning.
[0039] Further, corresponding to the temperature threshold, the slope parameter can also be set with a corresponding threshold, for example, a first slope threshold is set in the normal working state of the reboiler, and a second slope threshold is set in the boiling working state of the reboiler. Generally, when the water in the reboiler is sufficient, the temperature parameter and the slope parameter change relatively smoothly in the boiling working state due to water evaporation. When the water in the reboiler is reduced due to boiling evaporation, the temperature parameter gradually increases, and the slope parameter also has a significant change, for example, the increase is relatively obvious, and the like. Therefore, the working state of the reboiler can be determined by the second slope threshold, and the combination of different temperature ranges and slope ranges can accurately determine the working state of the reboiler.
[0040] For ease of understanding, Figure 4 Another flowchart of the dry-burning prevention control method of the reboiler is also shown, and the process of determining the working state of the reboiler and the water replenishment process of the reboiler are further described. Specifically, as shown in Figure 4 The flowchart includes the following steps: Step S402, in response to a start operation of the reboiler, monitoring the temperature parameter of the reboiler by the temperature sensor; Step S404, calculating the slope parameter corresponding to the temperature parameter; Step S406, generating a state combination containing the temperature parameter and the slope parameter; Step S408, determining the temperature range to which the temperature parameter included in the state combination belongs, and the slope range to which the slope parameter belongs; Step S410, if the temperature parameter is less than or equal to a preset first temperature threshold, and the slope parameter is less than or equal to a preset first slope threshold, it is determined that the working state of the reboiler is a normal working state; Wherein, the first temperature threshold is the minimum temperature required for the reboiler to generate steam; Step S412, if the temperature parameter is greater than the first temperature threshold and less than a preset second temperature threshold; and the slope parameter is less than a second slope threshold, it is determined that the working state of the reboiler is a boiling working state; Wherein, the second temperature threshold is greater than the first temperature threshold, and the second slope threshold is greater than the first slope threshold; Step S414, if the temperature parameter is greater than the first temperature threshold and less than a preset second temperature threshold; and the slope parameter is greater than the second slope threshold, it is determined that the working state of the reboiler is a dry-burning warning state; Step S416, if the temperature parameter is greater than the second temperature threshold, and the slope parameter is greater than the second slope threshold, it is determined that the working state of the reboiler is a dry-burning state; Step S418, determining the water replenishment strategy of the reboiler based on the working state.
[0041] In actual use, different water replenishment strategies can be used for different working states. For example, let T represent the temperature parameter and S represent the slope parameter. Assume that the first temperature threshold is represented as Th, the second temperature threshold is represented as Tmax, and the first slope threshold is represented as Smin. When the normal working state determined in step S410 is determined, the temperature parameter T≤Th, and the slope parameter S≤Smin. At this time, no water replenishment is needed, that is, the cooking device has no water replenishment action.
[0042] Further, the temperature range of the temperature parameter in the boiling working state determined in step S412 can be represented as Th<T≤Tmax, and the slope range to which the slope parameter belongs is represented as S<Smax. In this process, because the heating unit (metal shell of the evaporator) of the evaporator has a high temperature, the water in the cavity of the evaporator boils, which causes both the temperature parameter and the slope parameter to have an upward trend.
[0043] Further, for the dry burning early warning state determined in step S414, the water level in the cavity of the evaporator decreases after a period of time, at which time the temperature of the evaporator further increases, and the corresponding slope parameter also has an upward trend. Because the evaporator still has water boiling at this time, the temperature parameter will remain in the second temperature threshold range even if it increases. The temperature parameter will only increase significantly in the dry burning state of the evaporator. Therefore, the temperature range to which the temperature parameter belongs will not have too obvious changes, that is, Th<T≤Tmax. The slope represents the rate of change of the temperature parameter. Even if the temperature parameter does not change significantly, the slope will have a relatively obvious change, that is, S>Smax at this time. Further, the dry burning state in step S416 is a state in which both the temperature parameter and the slope parameter increase significantly. Therefore, T>Tmax and S>Smax. At this time, an alarm prompt can be generated, the operation of the evaporator is stopped, and water replenishment is performed in a timely manner.
[0044] Further, the evaporator corresponds to different water supplement strategies in different working states, and when the evaporator is supplemented with water, the working mode of the evaporator also needs to be further considered, for example, the evaporator will be periodically descaled, and in the descaling mode, high-temperature descaling will be adopted, which will also cause the temperature parameter of the evaporator to exceed the second temperature threshold, and the descaling mode also needs to be supplemented with water, therefore, in the embodiment of the present application, in the step S418, when the water supplement strategy of the evaporator is determined based on the working state, if it is monitored that the temperature parameter is greater than the second temperature threshold, it is further judged whether the current mode of the evaporator is the descaling mode; if the current mode of the evaporator is the descaling mode, it is monitored whether the slope parameter is greater than the second slope threshold in the descaling mode; if yes, it is determined that the working state in the descaling mode is the dry burning state, and the water supplement strategy at this time is determined to be the high-speed water supplement strategy; the high-speed water supplement strategy is executed to supplement the evaporator with water.
[0045] And if it is monitored that the temperature parameter is greater than the second temperature threshold, and it is judged that the current mode of the evaporator is not the descaling mode, the steam function mode of the cooking equipment is obtained; the cooking equipment is controlled to run based on the steam function mode, and it is monitored whether the slope parameter at this time is greater than the second slope threshold; if yes, it is determined that the working state is the dry burning state, and the water supplement strategy at this time is the high-speed water supplement strategy; the high-speed water supplement strategy is executed to supplement the evaporator with water.
[0046] That is, whether in the descaling mode or the cooking equipment normally performs the steam function cooking, if it is determined that the working state of the evaporator is the dry burning state, the high-speed water supplement strategy needs to be executed to avoid the phenomenon that the equipment is damaged due to the continuous dry burning of the evaporator.
[0047] Further, if it is determined that the working state of the evaporator is the dry burning warning state, it is determined that the water supplement strategy is the low-speed water supplement strategy; the low-speed water supplement strategy is executed to supplement the evaporator with water. That is, in the dry burning warning state, the water level of the evaporator is low, and there is a risk of dry burning, so the low-speed water supplement strategy can be adopted, wherein the high-speed water supplement strategy and the low-speed water supplement strategy refer to the speed or rate of water flow when the water pump supplements the evaporator with water, which can also be called water flow, the high-speed water supplement strategy can quickly supplement the evaporator with water to alleviate the phenomenon of dry burning, and the low-speed water supplement strategy slowly supplements the evaporator with water, in addition, in the boiling working state, the low-speed water supplement strategy can also slowly supplement the evaporator with water to avoid that the water flow in the evaporator is lost too fast in the boiling working state.
[0048] Further, in the embodiment of the present application, during the water replenishment process of the evaporator, the water replenishment to the evaporator can be stopped in response to the evaporator meeting the water replenishment stopping condition; wherein, the evaporator is determined to meet the water replenishment stopping condition when the temperature parameter decreases to the preset water replenishment control temperature parameter within the preset time range, or the water replenishment amount to the evaporator reaches the preset water replenishment threshold.
[0049] In the embodiment of the present application, the water replenishment control temperature parameter can be used as a water replenishment temperature limit parameter, for example, set to 85℃, which is used for temperature recovery judgment after water replenishment, that is, to determine that the temperature of the evaporator gradually recovers from the state of reaching the dry burning temperature threshold (second temperature threshold) to the normal state after effective water replenishment, at which time the evaporator can operate normally. In addition, during the water replenishment process, the temperature parameter can also be monitored, and if it is monitored that the temperature parameter decreases to the preset water replenishment control temperature parameter, the water replenishment can be stopped, that is, it is determined that the temperature of the evaporator recovers after effective water replenishment, at which time the water replenishment can be stopped. Alternatively, the water replenishment amount of each water replenishment can be set in advance, and when the water replenishment amount reaches the water replenishment threshold, the water replenishment can also be stopped, which can avoid excessive cold water from being injected into the evaporator to cause the steam pressure to drop sharply, thereby helping to improve the cooking stability.
[0050] Further, in the embodiment of the present application, the above-mentioned water replenishment control temperature parameter can also be used to prompt the water tank shortage, for example, during the water replenishment process of the evaporator, if the temperature parameter of the evaporator does not decrease to the water replenishment control temperature parameter within the preset time range, it indicates that the evaporator is not replenished in time, which is usually caused by the water tank shortage. Therefore, the cooking equipment can also issue a water tank shortage alarm prompt to prompt the user to replenish water in the water tank in time.
[0051] Further, in order to avoid misjudgment caused by instantaneous fluctuation of the temperature parameter, in the embodiment of the present application, a time factor is introduced, that is, when determining the working state of the evaporator, the corresponding continuous time can also be monitored when judging the range to which the temperature parameter and the slope parameter belong, and if the continuous time reaches the preset time threshold, for example, 3 seconds, the corresponding working state is determined. The specific time threshold can also be set according to the actual use, which is not limited in the embodiment of the present application.
[0052] In addition, in the embodiment of the present application, the temperature parameter obtained through the temperature sensor monitoring can further determine whether the evaporator is running normally. Specifically, after a start operation for the evaporator, the start duration of the evaporator and the initial temperature parameter of the evaporator can be recorded; if the start duration reaches the preset duration, the temperature parameter is obtained; it is determined whether the temperature parameter at this time is greater than the initial temperature parameter; if not, a fault prompt information of the evaporator is generated; if yes, it means that the evaporator is running normally after starting, that is, as the heater continuously heats, the temperature parameter of the evaporator gradually increases until the purpose of generating steam is achieved. If the start duration of the evaporator reaches the preset duration, and the temperature parameter of the evaporator is still not greater than the initial temperature parameter, it means that the evaporator is faulty and no steam is generated. At this time, the heater may be faulty and cannot effectively heat the shell of the evaporator. At this time, a fault prompt can be given.
[0053] Further, on the basis of the above-mentioned embodiment, the embodiment of the present application further provides a cooking equipment, which is configured with a controller, a water tank and an evaporator. The water tank supplies water for the evaporator. The evaporator comprises a heating unit and a temperature sensor arranged close to the heating unit. The controller is configured to execute the anti-dry burning control method of the evaporator. Figure 1 and Figure 2 The corresponding content will not be repeated here.
[0054] Further, the controller of the cooking equipment of the embodiment of the present application is configured with the anti-dry burning control device of the evaporator, so as to execute the anti-dry burning control method of the evaporator. As shown in Figure 5 a structural schematic diagram of an anti-dry burning control device of an evaporator. The device comprises: A monitoring module 50 is configured to monitor the temperature parameter of the evaporator through the temperature sensor in response to a start operation for the evaporator. A calculation module 52 is configured to calculate a slope parameter corresponding to the temperature parameter. A determination module 54 is configured to determine the working state of the evaporator according to the temperature parameter and the slope parameter. A water replenishing module 56 is configured to determine the water replenishing strategy of the evaporator based on the working state.
[0055] The anti-dry burning control device of the evaporator provided by the embodiment of the present application has the same technical features as the anti-dry burning control method of the evaporator provided by the above-mentioned embodiment, so it can also solve the same technical problems and achieve the same technical effects.
[0056] Furthermore, embodiments of the present invention also provide an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the above method.
[0057] This invention also provides a computer-readable storage medium storing a computer program, which, when executed by a processor, performs the steps of the above-described method.
[0058] Furthermore, embodiments of the present invention also provide a schematic diagram of the structure of an electronic device, such as... Figure 6 The diagram shows the structure of the electronic device, which includes a processor 61 and a memory 60. The memory 60 stores computer-executable instructions that can be executed by the processor 61, and the processor 61 executes the computer-executable instructions to implement the above-described method.
[0059] exist Figure 6 In the illustrated embodiment, the electronic device further includes a bus 62 and a communication interface 63, wherein the processor 61, the communication interface 63, and the memory 60 are connected via the bus 62.
[0060] The memory 60 may include high-speed random access memory (RAM) and may also include non-volatile memory, such as at least one disk storage device. Communication between this system network element and at least one other network element is achieved through at least one communication interface 63 (which can be wired or wireless), such as the Internet, wide area network, local area network, metropolitan area network, etc. The bus 62 may be an ISA (Industry Standard Architecture) bus, a PCI (Peripheral Component Interconnect) bus, or an EISA (Extended Industry Standard Architecture) bus, etc. The bus 62 can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 6 The symbol is represented by a single double-headed arrow, but this does not mean that there is only one bus or one type of bus.
[0061] The processor 61 can be an integrated circuit chip with signal processing capability. In the implementation process, each step of the above method can be completed by the integrated logic circuit of hardware in the processor 61 or the instruction in the form of software. The processor 61 described above can be a general processor, including a central processing unit (CPU), a network processor (NP), etc.; can also be a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The general processor can be a microprocessor or the processor can also be any conventional processor. The steps of the method disclosed in combination with the embodiments of the present application can be directly embodied as a hardware decoding processor for execution, or a combination of hardware and software modules in the decoding processor for execution. The software module can be located in a random access memory, a flash memory, a read only memory, a programmable read only memory or an electrically erasable programmable memory, a register, etc. The storage medium in the art. The storage medium is located in the memory, and the processor 61 reads the information in the memory, and combines the hardware to complete the foregoing method.
[0062] The computer program product of the evaporator dry burning prevention control method and the cooking equipment provided by the embodiment of the present application includes a computer readable storage medium storing program codes, the instructions included in the program codes can be used to execute the method described in the foregoing method embodiment, and the specific implementation can be referred to the method embodiment, which will not be described here.
[0063] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the above-described device and cooking equipment can refer to the corresponding process in the foregoing method embodiment, which will not be described here.
[0064] In addition, in the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood in a broad sense, for example, can be fixedly connected, can also be detachably connected, or integrally connected; can be mechanically connected, can also be electrically connected; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0065] If the functions are realized in the form of software function units and sold or used as independent products, they can be stored in a computer readable storage medium. Based on this understanding, the technical solutions of the present application or the parts of the present application that essentially contribute to the prior art or the parts of the technical solutions can be embodied in the form of software products. The computer software product is stored in a storage medium and includes a plurality of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in the various embodiments of the present application. The aforementioned storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk or an optical disk, and various media that can store program codes.
[0066] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.
[0067] Finally, it should be noted that: the above embodiments are only specific embodiments of the present application, which are used to illustrate the technical solutions of the present application, and are not limited thereto, the protection scope of the present application is not limited thereto, although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art within the technical range disclosed by the present application can modify or easily think of changes to the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features; and these modifications, changes or replacements do not make the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.
Claims
1. A method for preventing dry burning of an evaporator, characterized in that, A method applicable to a cooking appliance equipped with an evaporator and a water tank, wherein the water tank supplies water to the evaporator, the evaporator includes a heating unit and a temperature sensor disposed in close proximity to the heating unit, the method comprising: In response to the start-up operation of the evaporator, the temperature parameters of the evaporator are monitored by the temperature sensor; Calculate the slope parameter corresponding to the temperature parameter; The operating state of the evaporator is determined based on the temperature parameter and the slope parameter; The water replenishment strategy for the evaporator is determined based on the operating status.
2. The method according to claim 1, characterized in that, The steps for monitoring the temperature parameters of the evaporator include: The temperature parameters are acquired at preset time intervals, and the temperature parameters carry timestamps. A temperature curve corresponding to the evaporator is generated based on the timestamp and the temperature parameter; and a slope parameter corresponding to the temperature parameter is calculated based on the temperature curve; wherein the temperature curve is a curve of the temperature parameter changing over time.
3. The method according to claim 1, characterized in that, The step of determining the operating state of the evaporator based on the temperature parameter and the slope parameter includes: Generate a state combination that includes the temperature parameter and the slope parameter; The operating state of the evaporator is determined based on the aforementioned state combination.
4. The method according to claim 3, characterized in that, The step of determining the operating state of the evaporator based on the state combination includes: Determine the temperature range to which the temperature parameter included in the state combination belongs, and the slope range to which the slope parameter belongs; The operating state of the evaporator is determined based on the temperature range and the slope range.
5. The method according to claim 4, characterized in that, The step of determining the operating state of the evaporator based on the temperature range and the slope range includes: If the temperature parameter is less than or equal to a preset first temperature threshold, and the slope parameter is less than or equal to a preset first slope threshold, then the working state of the evaporator is determined to be a normal working state; wherein, the first temperature threshold is the minimum temperature required for the evaporator to generate steam; If the temperature parameter is greater than the first temperature threshold and less than the preset second temperature threshold; and the slope parameter is less than the second slope threshold, then the working state of the evaporator is determined to be a boiling working state; wherein the second temperature threshold is greater than the first temperature threshold, and the second slope threshold is greater than the first slope threshold. If the temperature parameter is greater than the first temperature threshold and less than the preset second temperature threshold; and the slope parameter is greater than the second slope threshold, then the working state of the evaporator is determined to be a dry burning warning state. If the temperature parameter is greater than the second temperature threshold, and the slope parameter is greater than the second slope threshold, then the evaporator is determined to be in a dry-burning state.
6. The method according to claim 5, characterized in that, The steps for determining the water replenishment strategy for the evaporator based on the operating state include: If the temperature parameter is detected to be greater than the second temperature threshold, determine whether the current mode of the evaporator is descaling mode; If the current mode of the evaporator is the descaling mode, then in the descaling mode, it is monitored whether the slope parameter is greater than the second slope threshold. If so, the working state is determined to be dry burning state, and the water replenishment strategy is a high-speed water replenishment strategy; The high-speed water replenishment strategy is implemented to replenish water to the evaporator.
7. The method according to claim 5, characterized in that, The step of determining the water replenishment strategy for the evaporator based on the operating state further includes: If the temperature parameter is detected to be greater than the second temperature threshold, and it is determined that the current mode of the evaporator is not the descaling mode, then the steaming function mode of the cooking device is obtained. The cooking device is controlled based on the steaming function mode, and the slope parameter is monitored to see if it is greater than the second slope threshold. If so, the working state is determined to be dry burning state, and the water replenishment strategy is a high-speed water replenishment strategy; The high-speed water replenishment strategy is implemented to replenish water to the evaporator.
8. The method according to claim 5, characterized in that, The step of determining the water replenishment strategy for the evaporator based on the operating state further includes: If it is determined that the evaporator is in a dry burning warning state, then the water replenishment strategy is determined to be a low-speed water replenishment strategy. The low-speed water replenishment strategy is implemented to replenish water to the evaporator.
9. The method according to claim 6 or 7, characterized in that, The method further includes: During the evaporator water replenishment process, water replenishment to the evaporator is stopped when the evaporator meets the stop water replenishment condition. Specifically, the evaporator is determined to meet the stop water replenishment condition when the temperature parameter drops to the preset water replenishment control temperature parameter within a preset time range, or the evaporator is determined to meet the stop water replenishment condition when the amount of water replenished to the evaporator reaches the preset water replenishment threshold.
10. A cooking device, characterized in that, The cooking device is equipped with a controller, a water tank, and an evaporator. The water tank supplies water to the evaporator. The evaporator includes a heating unit and a temperature sensor disposed in close proximity to the heating unit. The controller is configured to perform the method as described in any one of claims 1-9.