Steaming oven and control method and system thereof

Abstract

The invention provides a steaming oven and a control method and system thereof. The control method comprises the steps that in response to a steaming oven starting instruction, a water pump and a steam generation module are controlled to start working; monitoring the working current when the water pump pumps water and the current temperature of the steam generation module; monitoring whether the water tank is in a first water shortage state according to the working current and the current temperature; in response to the first water shortage state of the water tank, supplementing water to the water tank until the first water shortage state is released. Whether the water tank is in the first water shortage state or not is detected by monitoring the working current when the water pump pumps water and the current temperature of the steam generation module, when the water tank is short of water, water is intelligently supplemented to the water tank, the cooking process is not interrupted, and the cooking effect is guaranteed.

Description

Technical Field

[0001] The present disclosure relates to the technical field of steam oven control, and in particular to a steam oven and a control method and system thereof. Background Art

[0002] Steam ovens often need to interrupt the cooking process due to insufficient water in the water tank in order to refill the water tank. Especially for built-in water tanks, the door needs to be opened to remove the water tank, which will cause steam to escape and greatly affect the cooking effect.

[0003] Furthermore, the steam ovens currently on the market only focus on whether there is water in the water tank, but ignore whether the water in the water tank meets the water level required for cooking, which may result in a lack of water in the water tank during cooking and the cooking may have to be suspended. Summary of the invention

[0004] In order to overcome the above technical problems, the present disclosure provides a steam oven and a control method and system thereof.

[0005] The present invention solves the above technical problems through the following technical solutions:

[0006] In a first aspect, the present disclosure provides a control method for a steam oven, wherein the steam oven comprises a steam generating module and a water tank, wherein a water pump is provided between the steam generating module and the water tank.

[0007] The control method comprises:

[0008] In response to a steam oven start instruction, controlling the water pump and the steam generating module to start working;

[0009] monitoring the working current of the water pump when pumping water and the current temperature of the steam generating module;

[0010] Monitoring whether the water tank is in a first water shortage state according to the working current and the current temperature;

[0011] In response to the water tank being in a first water shortage state, water is replenished into the water tank until the first water shortage state is resolved.

[0012] Optionally, the step of monitoring whether the water tank is in a first water shortage state according to the working current and the current temperature includes:

[0013] Acquire a first working state of the water pump;

[0014] Determining whether the first working state is normal;

[0015] If yes, when the working current is less than the preset no-load current and the current temperature is greater than the preset temperature threshold, the water tank is set to be in the first water shortage state;

[0016] If not, when the current temperature is greater than the preset temperature threshold, the water tank is set to be in the first water shortage state.

[0017] Optionally, the step of replenishing water to the water tank until the first water shortage state is relieved includes:

[0018] Refilling the water tank with water and monitoring a first water level in the water tank;

[0019] In response to the first water level reaching a preset water replenishment level, water replenishment is stopped and the first water shortage state is released.

[0020] Optionally, the control method further includes:

[0021] In response to a steam oven stop instruction, the water in the water tank is drained.

[0022] Optionally, the step of acquiring the first working state of the water pump includes:

[0023] Monitoring the water level change of the water tank within a preset monitoring time;

[0024] Determining whether the working current exceeds the preset no-load current;

[0025] If yes, when the water level change indicates that the water in the water tank is reduced, it is determined that the first working state is normal, and when the water level change indicates that the water in the water tank is not reduced, it is determined that the first working state is abnormal;

[0026] If not, when the water level change indicates that the water in the water tank is reduced, it is determined that the first working state is abnormal; when the water level change indicates that the water in the water tank is not reduced, it is determined that the first working state is normal.

[0027] Optionally, the step of controlling the water pump and the steam generating module to start working includes:

[0028] Obtaining a target water level corresponding to a target recipe and a second water level of the water tank;

[0029] determining whether the second water level is greater than the target water level;

[0030] If not, setting the water tank to a second water shortage state and outputting a prompt message;

[0031] If or in response to the second water shortage state being released, the water pump and the steam generation module are controlled to start working.

[0032] Optionally, the step of obtaining a target water level corresponding to the target recipe includes:

[0033] Obtaining the cooking time of the target recipe;

[0034] The target water level is determined according to the cooking time.

[0035] Optionally, before the step of responding to the second water shortage state being released, the method further includes:

[0036] Refilling water into the water tank and monitoring a third water level of the water tank;

[0037] In response to the third water level reaching the target water level, water replenishment is stopped and the second water shortage state is released.

[0038] Optionally, the steam oven further includes a water level detection module;

[0039] Before the step of responding to the second water shortage state being released, the method further includes:

[0040] Acquire a second working state of the water level detection module;

[0041] If the second working state is normal, replenishing water to the water tank and monitoring a third water level of the water tank;

[0042] In response to the third water level reaching the target water level, releasing the second water shortage state;

[0043] If the second working state is abnormal, in response to canceling the prompt information, the second water shortage state is released.

[0044] Optionally, the step of obtaining the second working state of the water level detection module includes:

[0045] In response to the water tank being taken out, obtaining a water tank-free detection value through the water level detection module;

[0046] Determining whether the water tank-free detection value is less than the second water level;

[0047] If yes, setting the second working state to normal;

[0048] If not, the second working state is set to be abnormal.

[0049] Optionally, the control method further includes:

[0050] In response to a water tank calibration instruction, replenishing water to the water tank and monitoring a fourth water level of the water tank;

[0051] In response to the fourth water level reaching the maximum water level of the water tank, acquiring a new full water detection value through the water level detection module to update a default full water detection value;

[0052] draining the water in the water tank;

[0053] monitoring whether the water tank is empty;

[0054] In response to the water tank being emptied, obtaining a new water-free detection value through the water level detection module to update a default water-free detection value;

[0055] The water level of the water tank is calculated based on the collected detection value of the water level detection module, the default no-water detection value, the default full-water detection value and the maximum water level.

[0056] Optionally, the step of monitoring whether the water tank is empty comprises:

[0057] Controlling the water pump to pump water;

[0058] Monitoring the working current of the water pump when pumping water;

[0059] Until the working current is less than or equal to the preset no-load current, it is determined that the water tank is empty.

[0060] In a second aspect, the present disclosure provides a control system for a steam oven, which is used to implement the steps of the control method described in the first aspect. The steam oven comprises a steam generating module and a water tank, and a water pump is provided between the steam generating module and the water tank.

[0061] The control system comprises:

[0062] A starting module, used for controlling the water pump and the steam generating module to start working in response to a steam oven starting instruction;

[0063] A monitoring module, used to monitor the working current of the water pump when pumping water and the current temperature of the steam generating module;

[0064] a water shortage detection module, used for monitoring whether the water tank is in a first water shortage state according to the working current and the current temperature;

[0065] The water replenishment module is used for replenishing water to the water tank in response to the water tank being in a first water shortage state until the first water shortage state is released.

[0066] Optionally, the water shortage detection module is used to:

[0067] Acquire a first working state of the water pump;

[0068] Determining whether the first working state is normal;

[0069] If yes, when the working current is less than the preset no-load current and the current temperature is greater than the preset temperature threshold, the water tank is set to be in the first water shortage state;

[0070] If not, when the current temperature is greater than the preset temperature threshold, the water tank is set to be in the first water shortage state.

[0071] Optionally, the water replenishment module is used to:

[0072] Refilling the water tank with water and monitoring a first water level in the water tank;

[0073] In response to the first water level reaching a preset water replenishment level, water replenishment is stopped and the first water shortage state is released.

[0074] Optionally, the control system further comprises a drainage module, and the drainage module is used to:

[0075] In response to a steam oven stop instruction, the water in the water tank is drained.

[0076] Optionally, the water shortage detection module is further used for:

[0077] Monitoring the water level change of the water tank within a preset monitoring time;

[0078] Determining whether the working current exceeds the preset no-load current;

[0079] If yes, when the water level change indicates that the water in the water tank is reduced, it is determined that the first working state is normal, and when the water level change indicates that the water in the water tank is not reduced, it is determined that the first working state is abnormal;

[0080] If not, when the water level change indicates that the water in the water tank is reduced, it is determined that the first working state is abnormal; when the water level change indicates that the water in the water tank is not reduced, it is determined that the first working state is normal.

[0081] Optionally, the startup module is used to:

[0082] Obtaining a target water level corresponding to a target recipe and a second water level of the water tank;

[0083] determining whether the second water level is greater than the target water level;

[0084] If not, setting the water tank to a second water shortage state and outputting a prompt message;

[0085] If or in response to the second water shortage state being released, the water pump and the steam generation module are controlled to start working.

[0086] Optionally, the startup module is further used to:

[0087] Obtaining the cooking time of the target recipe;

[0088] The target water level is determined according to the cooking time.

[0089] Optionally, the startup module is also used to:

[0090] Refilling water into the water tank and monitoring a third water level of the water tank;

[0091] In response to the third water level reaching the target water level, water replenishment is stopped and the second water shortage state is released.

[0092] Optionally, the steam oven further includes a water level detection module;

[0093] The startup module is also used for:

[0094] Acquire a second working state of the water level detection module;

[0095] If the second working state is normal, replenishing water to the water tank and monitoring a third water level of the water tank;

[0096] In response to the third water level reaching the target water level, releasing the second water shortage state;

[0097] If the second working state is abnormal, in response to canceling the prompt information, the second water shortage state is released.

[0098] Optionally, the startup module is further used to:

[0099] In response to the water tank being taken out, obtaining a water tank-free detection value through the water level detection module;

[0100] Determining whether the water tank-free detection value is less than the second water level;

[0101] If yes, setting the second working state to normal;

[0102] If not, the second working state is set to be abnormal.

[0103] Optionally, the control system further comprises a water tank calibration module, and the water tank calibration module is used to:

[0104] In response to a water tank calibration instruction, replenishing water to the water tank and monitoring a fourth water level of the water tank;

[0105] In response to the fourth water level reaching the maximum water level of the water tank, acquiring a new full water detection value through the water level detection module to update a default full water detection value;

[0106] draining the water in the water tank;

[0107] monitoring whether the water tank is empty;

[0108] In response to the water tank being emptied, obtaining a new water-free detection value through the water level detection module to update a default water-free detection value;

[0109] The water level of the water tank is calculated based on the collected detection value of the water level detection module, the default no-water detection value, the default full-water detection value and the maximum water level.

[0110] Optionally, the water tank calibration module is further used for:

[0111] Controlling the water pump to pump water;

[0112] Monitoring the working current of the water pump when pumping water;

[0113] Until the working current is less than or equal to the preset no-load current, it is determined that the water tank is empty.

[0114] In a third aspect, the present disclosure provides a steam oven, comprising the control system described in the second aspect.

[0115] Based on the common sense in the art, the above-mentioned implementation modes can be arbitrarily combined to obtain the preferred embodiments of the present disclosure.

[0116] The positive progressive effect of the present disclosure is that the steam oven and its control method and system provided by the present disclosure determine whether the water tank is short of water by monitoring the working current of the water pump when pumping water and the current temperature of the steam generating module, and when it is detected that the water tank is short of water, intelligently replenish water to the water tank without interrupting the cooking process, thereby ensuring the cooking effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0117] Figure 1 It is a flow chart of a control method of a steam oven according to an embodiment of the present disclosure;

[0118] Figure 2 This is a schematic diagram of a control flow after cooking starts according to an embodiment of the present disclosure;

[0119] Figure 3 This is a schematic diagram of a control flow before cooking starts according to an embodiment of the present disclosure;

[0120] Figure 4 A schematic diagram of a water tank calibration process according to an embodiment of the present disclosure;

[0121] Figure 5 It is a module schematic diagram of a control system of a steam oven according to an embodiment of the present disclosure;

[0122] Figure 6 It is a schematic diagram of a module of a steam oven according to an embodiment of the present disclosure;

[0123] Figure 7The figure is a schematic diagram of the structure of an electronic device according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0124] The present disclosure is further described below by way of examples, but the present disclosure is not limited to the scope of the examples.

[0125] It should be noted that if there are descriptions involving "first", "second", etc. in the embodiments of the present disclosure, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0126] In addition, the technical solutions between the various implementation methods can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this disclosure.

[0127] It should be noted that the steam oven generally includes a steam generating module and a water tank. A water pump is provided between the steam generating module and the water tank, and the water pump is used to pump water in the water tank to the steam generating module. The steam generating module is used to heat water to generate steam.

[0128] Example 1

[0129] This embodiment provides a control method for a steam oven. Figure 1 As shown, the control method includes:

[0130] S1, in response to a steam oven start instruction, controlling a water pump and a steam generating module to start working;

[0131] S2, monitoring the working current of the water pump when pumping water and the current temperature of the steam generating module;

[0132] S3, monitoring whether the water tank is in a first water shortage state according to the working current and the current temperature;

[0133] S4. In response to the water tank being in a first water shortage state, replenishing water into the water tank until the first water shortage state is resolved.

[0134] The control method of the steam oven provided in this embodiment detects whether the water tank is in the first water-deficient state by monitoring the working current of the water pump when pumping water and the current temperature of the steam generating module. When the water tank is short of water, water is intelligently replenished into the water tank without interrupting the cooking process, thereby ensuring the cooking effect.

[0135] Specifically, when the working current of the monitored water pump is effective, first determine whether the working current is less than the preset no-water current; if so, it means that the water pump is no-water and the water tank is short of water; if not, it means that the water pump can pump water normally and there is enough water in the water tank. Then determine whether the current temperature is greater than the preset temperature threshold; if so, it means that the water in the steam generation module is insufficient or has been consumed, resulting in an overly high temperature of the steam generation module, and water needs to be replenished as soon as possible, so the water tank is set to the first water-scarce state; if not, it means that there is still a certain amount of water in the steam generation module for steam generation, and water replenishment is not needed temporarily.

[0136] In step S3, in order to ensure that the working current of the water pump is effective when pumping water, the working state of the water pump may be further determined. As a feasible implementation, step S3 includes:

[0137] S31, obtaining a first working state of the water pump;

[0138] S32, determining whether the first working state is normal;

[0139] S33. If yes, when the working current is less than the preset no-load current and the current temperature is greater than the preset temperature threshold, the water tank is set to the first water shortage state; if no, when the current temperature is greater than the preset temperature threshold, the water tank is set to the first water shortage state.

[0140] In this embodiment, different methods are selected according to the first working state of the water pump to determine whether the water tank is short of water.

[0141] Specifically, when the first working state is normal, indicating that the monitored working current of the water pump when pumping water is valid, the judgment is made in a normal manner, that is, the working current of the water pump when pumping water is combined with the current temperature of the steam generation module. When the first working state is abnormal, indicating that the monitored working current of the water pump when pumping water is invalid, the judgment only needs to be made based on the current temperature of the steam generation module.

[0142] As a feasible implementation, step S31 includes:

[0143] S311, monitoring the water level change of the water tank within the preset monitoring time;

[0144] S312, determining whether the working current exceeds the preset no-load current;

[0145] S313. If so, when the water level change indicates that the water in the water tank has decreased, it is determined that the first working state is normal; when the water level change indicates that the water in the water tank has not decreased, it is determined that the first working state is abnormal; if not, when the water level change indicates that the water in the water tank has decreased, it is determined that the first working state is abnormal; when the water level change indicates that the water in the water tank has not decreased, it is determined that the first working state is normal.

[0146] In this embodiment, the change of the second water level of the water tank obtained by monitoring within the preset monitoring time can be combined with the working current of the water pump when pumping water to determine the first working state of the water pump.

[0147] Specifically, when the working current of the water pump when pumping water exceeds the preset no-dry current, and the water in the water tank gradually decreases during the preset monitoring time, it means that the water pump is pumping water normally, so it can be determined that the first working state of the water pump is normal. Similarly, when the working current of the water pump when pumping water does not exceed the preset no-dry current, and the water in the water tank does not decrease during the preset monitoring time, it means that the water pump is not pumping water, and it can also be determined that the first working state of the water pump is normal. That is, based on these two situations, it can be considered that the working current of the water pump when pumping water is effective.

[0148] On the contrary, when the working current of the water pump exceeds the preset no-drain current when pumping water, but the water in the water tank does not decrease within the preset monitoring time, it means that the water pump is not actually pumping water, and the monitored working current of the water pump is incorrect, so it can be determined that the first working state of the water pump is abnormal. Similarly, when the working current of the water pump does not exceed the preset no-drain current when pumping water, but the water in the water tank gradually decreases within the preset monitoring time, it means that the water pump is actually pumping water, and the monitored working current of the water pump is incorrect, so it can also be determined that the first working state of the water pump is abnormal.

[0149] Based on the above process, it is timely detected that the water tank is in the first water shortage state, and water is automatically added to the water tank. Step S4 specifically includes:

[0150] S41, replenishing water into the water tank and monitoring a first water level of the water tank;

[0151] S42: In response to the first water level reaching the preset water replenishment level, stop replenishing water and release the first water shortage state.

[0152] Among them, the preset water replenishment level can be estimated based on the remaining cooking time.

[0153] Exemplarily, the steam oven further includes a water inlet pipe and a water inlet valve, wherein the water inlet pipe connects the water inlet and the water tank. The water inlet valve is opened, and water is transported to the water tank through the water inlet pipe for water replenishment. After the water level in the water tank reaches a preset water replenishment level, the water inlet valve is closed to stop water replenishment, and the first water shortage state is released.

[0154] Furthermore, in order to prevent the water in the water tank from being left for a long time and thus breeding a large number of bacteria, the water in the water tank can be drained out in time after cooking is completed. As a feasible implementation method, the control method also includes:

[0155] S5. In response to the steam oven stop instruction, drain the water in the water tank.

[0156] In this embodiment, the remaining water in the water tank can be automatically drained after cooking is completed, so as to prevent the water in the water tank from being left for a long time and breeding a large number of bacteria, thereby causing the water in the water tank to deteriorate or become smelly.

[0157] Exemplarily, the steam oven further comprises a drain pipe and a drain valve, wherein the drain pipe connects the drain port and the water tank. The drain valve is opened to drain the remaining water in the water tank through the drain pipe until the drain valve is closed after the water tank is emptied.

[0158] In a specific application scenario, the control process after cooking starts is as follows: Figure 2 shown.

[0159] First, control the water pump and steam generation module to start working. Start the water pump to pump water from the water tank to the steam generation module, and start the steam generation module to heat the water to generate steam. Then monitor the working current of the water pump when pumping water and the current temperature of the steam generation module in real time. Obtain the working status of the water pump and determine whether the working status of the water pump is normal.

[0160] If it is normal, then determine whether the working current of the water pump is less than the preset no-load current. If it is, it means that the water pump is no-load, that is, there is no water in the water tank. And determine whether the current temperature of the steam generation module is greater than the preset temperature threshold. If it is, it means that the temperature of the steam generation module is too high, that is, there is no water in the steam generation module. In the case that both the water tank and the steam generation module are short of water, the water tank is set to be in a water shortage state.

[0161] If it is abnormal, it means that the working current of the water pump is inaccurate, and then it can be directly judged whether the water tank is in a water shortage state based on the current temperature of the steam generation module.

[0162] Then, when the water tank is in a water shortage state, water is added to the water tank in a timely manner, and the water level of the water tank is monitored at the same time, until the water level of the water tank reaches a preset water replenishment level, the water replenishment is stopped, and finally the water shortage state is relieved.

[0163] Example 2

[0164] This embodiment improves the control method of the steam oven in Embodiment 1. Before the water pump and the steam generator module start working, it can first detect whether the water in the water tank is sufficient to complete the cooking, further ensuring that the cooking process is continuous and reducing the possibility of adding water during the cooking process.

[0165] As a feasible implementation, step S1 includes:

[0166] S11, obtaining a target water level corresponding to a target recipe and a second water level of the water tank;

[0167] S12, determining whether the second water level is greater than the target water level;

[0168] S13. If not, set the water tank to the second water shortage state and output a prompt message; if yes or in response to the second water shortage state being released, control the water pump and the steam generation module to start working.

[0169] The target recipe is usually preset in the control program of the steam oven, and different recipes have different preset cooking conditions. For example, cooking time, cooking temperature, etc. are used to control the working parameters of the steam oven. As a feasible implementation, step S11 includes:

[0170] S111, obtaining the cooking time of the target recipe;

[0171] S112, determining a target water level according to the cooking time.

[0172] In this embodiment, the target water level required to complete the target recipe can be estimated according to the cooking time of the target recipe, and the water tank is replenished with water in advance before the steam oven starts working to ensure that there is enough water in the water tank to achieve the preset cooking conditions of the target recipe.

[0173] Exemplarily, the target water level can be calculated as follows:

[0174] V ′ =P1vT,

[0175] P1=A(Temp0-Temp1)P0

[0176] Among them, V ′ It is used to characterize the target water level, P1 is used to characterize the required power during the cooking process, v is used to characterize the water consumption per watt of power per minute (W / min), T is used to characterize the cooking time, A is used to characterize the power coefficient, Temp0 is used to characterize the preset cooking temperature, Temp1 is used to characterize the current detection temperature, and P0 is used to characterize the basic power.

[0177] In this embodiment, when the water tank is in the second water shortage state, the second water shortage state can be released manually or automatically.

[0178] As a feasible implementation manner, before the step of responding to the second water shortage state being released, the method further includes:

[0179] Filling the water tank with water and monitoring the third water level of the water tank;

[0180] In response to the third water level reaching the target water level, water replenishment is stopped and the second water shortage state is released.

[0181] The steam oven usually includes a water level detection module, through which the water level of the water tank is monitored.

[0182] The method of automatically releasing the second water shortage state mainly depends on the water level detection module. If the water level detection module fails, resulting in an incorrect third water level, it is necessary to wait for the user to manually release the second water shortage state. Therefore, different methods can be selected to release the second water shortage state in combination with the second working state of the water level detection module.

[0183] As another feasible implementation manner, before the step of responding to the second water shortage state being released, the method further includes:

[0184] S131, obtaining a second working state of the water level detection module;

[0185] S132, if the second working state is normal, replenish water to the water tank and monitor the third water level of the water tank; in response to the third water level reaching the target water level, release the second water shortage state;

[0186] S133: If the second working state is abnormal, in response to canceling the prompt information, the second water shortage state is released.

[0187] In this embodiment, when the second working state of the water level detection module is normal, water can be automatically added to the water tank until the third water level of the water tank reaches the target water level to release the second water shortage state. When the second working state of the water level detection module is abnormal, it is necessary to wait for the user to manually cancel the prompt information, and then release the second water shortage state in response to the cancellation of the prompt information.

[0188] In combination with the above implementation, in another specific application scenario, before the water pump and steam generator module start working, the control process is as follows: Figure 3 shown.

[0189] In which, whether the water level detection module is faulty usually requires corresponding professional knowledge to be able to judge. Based on this, this embodiment also provides a user-operable method for judging whether the water level detection module is faulty.

[0190] As a feasible implementation, step S131 includes:

[0191] S1311, in response to the water tank being taken out, obtaining a water tank-free detection value through a water level detection module;

[0192] S1312, determining whether the water tank-free detection value is less than the second water level;

[0193] S1313. If yes, set the second working state to be normal; if no, set the second working state to be abnormal.

[0194] Specifically, the user can take out the water tank and judge for himself whether there is enough water in the water tank. After the user takes out the water tank, the water level detection module obtains the detection value of no water tank, and compares the detection value of no water tank with the first water level. Under normal circumstances, the detection value of no water tank should be less than the first water level. Therefore, when the detection value of no water tank is less than the first water level, it is normal to set the second working state of the water level detection module, otherwise, it is abnormal to set the second working state of the water level detection module. After the user resets the water tank, it can be judged whether to automatically replenish water or wait for the user to manually cancel the prompt information according to the second working state just set.

[0195] Because water level detection modules produced in different batches and by different manufacturers are installed on the support side walls of the water tanks in different steam ovens, there is an installation gap deviation and a certain amount of wear on the water level detection modules during use. As a result, when the water levels in different steam ovens are the same, different steam ovens will have different detection values ​​due to the water level detection modules, which in turn will lead to different water levels reflected by the detection values.

[0196] Therefore, this embodiment also provides a method for automatically calibrating the water tank for the user. The user can perform a water tank calibration based on the water level detection module regularly as needed to maintain the detection accuracy of the water level detection module at a high level.

[0197] As a feasible implementation method, the above control method further includes:

[0198] In response to a water tank calibration instruction, replenishing water to the water tank and monitoring a fourth water level in the water tank;

[0199] In response to the fourth water level reaching the maximum water level of the water tank, acquiring a new full water detection value through the water level detection module to update a default full water detection value;

[0200] draining the water in the water tank;

[0201] monitoring whether the water tank is empty;

[0202] In response to the water tank being emptied, obtaining a new water-free detection value through the water level detection module to update a default water-free detection value;

[0203] The water level of the water tank is calculated based on the collected detection value of the water level detection module, the default no-water detection value, the default full-water detection value and the maximum water level.

[0204] Specifically, the water level detection module can select a capacitive water level sensor, and the capacitive water level sensor is installed on the side wall of the support of the water tank. The user issues a water tank calibration command through the water tank calibration button, and then the water tank calibration can be fully automatically performed based on the water level detection module.

[0205] For example, refer to Figure 4 , first add water to the water tank and monitor the water level of the water tank at the same time. When the water level of the water tank reaches the maximum water level, the new full water capacitance value is obtained through the capacitive water level sensor to update the default full water capacitance value. Then the water in the water tank is drained, and the working current of the water pump when pumping water is used to determine whether the water tank is empty. Finally, after the water tank is emptied, the new waterless capacitance value is obtained through the capacitive water level sensor to update the default waterless capacitance value.

[0206] Among them, the relationship between the current water level of the water tank and the capacitance value can be expressed as:

[0207]

[0208] Among them, V now It is used to represent the current water level of the water tank, V1 is used to represent the default maximum water level of the water tank, V0 is used to represent the default minimum water level of the water tank (the default is 0), C now Used to represent the capacitance value currently collected by the water level detection module. C1 is used to represent the default maximum capacitance value, and C0 is used to represent the default minimum capacitance value.

[0209] As a feasible implementation, the steps of monitoring whether the water tank is empty include:

[0210] Control the water pump to pump water;

[0211] Monitor the working current of the water pump when pumping water;

[0212] Until the working current is less than or equal to the preset no-load current, it is determined that the water tank is empty.

[0213] In this embodiment, whether the water tank is empty is determined by the working current of the water pump when pumping water. That is, when the working current of the water pump when pumping water gradually decreases to less than or equal to the preset empty pumping current, it can be considered that the water tank is empty.

[0214] Example 3

[0215] Based on the same concept, this embodiment provides a control system for a steam oven. The control system is used to implement the steps of the control method of Embodiment 1 and Embodiment 2.

[0216] like Figure 5 As shown, the control system includes:

[0217] A starting module 501 is used to control the water pump and the steam generating module to start working in response to a steam oven starting instruction;

[0218] A monitoring module 502, used to monitor the working current of the water pump when pumping water and the current temperature of the steam generating module;

[0219] A water shortage detection module 503, used for monitoring whether the water tank is in a first water shortage state according to the working current and the current temperature;

[0220] The water replenishment module 504 is configured to replenish water to the water tank in response to the water tank being in a first water shortage state until the first water shortage state is resolved.

[0221] The control system of the steam oven provided in this embodiment detects whether the water tank is in the first water-deficient state by monitoring the working current of the water pump when pumping water and the current temperature of the steam generating module. When the water tank is short of water, water is intelligently replenished into the water tank without interrupting the cooking process, thereby ensuring the cooking effect.

[0222] Specifically, the control system is used to determine whether the working current is less than the preset no-water pumping current when the working current of the monitored water pump is effective; if so, it means that the water pump is no-water pumping and the water tank is short of water; if not, it means that the water pump can pump water normally and there is enough water in the water tank. Then determine whether the current temperature is greater than the preset temperature threshold; if so, it means that the water in the steam generation module is insufficient or has been consumed, resulting in the temperature of the steam generation module being too high and water needs to be replenished as soon as possible, so the water tank is set to the first water-scarce state; if not, it means that there is still a certain amount of water in the steam generation module for steam generation and no water replenishment is needed temporarily.

[0223] In order to ensure that the working current of the water pump is effective when pumping water, the water shortage detection module 503 can further determine the working state of the water pump.

[0224] As a feasible implementation method, the water shortage detection module 503 is used to obtain the first working state of the water pump; determine whether the first working state is normal; if so, when the working current is less than the preset no-load current and the current temperature is greater than the preset temperature threshold, set the water tank to the first water shortage state; if not, when the current temperature is greater than the preset temperature threshold, set the water tank to the first water shortage state.

[0225] In this embodiment, different methods are selected according to the first working state of the water pump to determine whether the water tank is short of water.

[0226] Specifically, when the first working state is normal, indicating that the monitored working current of the water pump when pumping water is valid, the judgment is made in a normal manner, that is, the working current of the water pump when pumping water is combined with the current temperature of the steam generation module. When the first working state is abnormal, indicating that the monitored working current of the water pump when pumping water is invalid, the judgment only needs to be made based on the current temperature of the steam generation module.

[0227] Among them, as a feasible implementation method, the water shortage detection module 503 is also used to monitor the water level changes in the water tank within a preset monitoring time; determine whether the working current exceeds the preset no-load current; if so, when the water level change indicates that the water in the water tank is reduced, it is determined that the first working state is normal, and when the water level change indicates that the water in the water tank is not reduced, it is determined that the first working state is abnormal; if not, when the water level change indicates that the water in the water tank is reduced, it is determined that the first working state is abnormal, and when the water level change indicates that the water in the water tank is not reduced, it is determined that the first working state is normal.

[0228] In this embodiment, the change of the second water level of the water tank obtained by monitoring within the preset monitoring time can be combined with the working current of the water pump when pumping water to determine the first working state of the water pump.

[0229] Specifically, when the working current of the water pump when pumping water exceeds the preset no-dry current, and the water in the water tank gradually decreases during the preset monitoring time, it means that the water pump is pumping water normally, so it can be determined that the first working state of the water pump is normal. Similarly, when the working current of the water pump when pumping water does not exceed the preset no-dry current, and the water in the water tank does not decrease during the preset monitoring time, it means that the water pump is not pumping water, and it can also be determined that the first working state of the water pump is normal. That is, based on these two situations, it can be considered that the working current of the water pump when pumping water is effective.

[0230] On the contrary, when the working current of the water pump exceeds the preset no-drain current when pumping water, but the water in the water tank does not decrease within the preset monitoring time, it means that the water pump is not actually pumping water, and the monitored working current of the water pump is incorrect, so it can be determined that the first working state of the water pump is abnormal. Similarly, when the working current of the water pump does not exceed the preset no-drain current when pumping water, but the water in the water tank gradually decreases within the preset monitoring time, it means that the water pump is actually pumping water, and the monitored working current of the water pump is incorrect, so it can also be determined that the first working state of the water pump is abnormal.

[0231] Based on the above process, the water tank is detected in time to be in the first water shortage state, and water is automatically added to the water tank. The water replenishment module 504 is used to replenish water to the water tank and monitor the first water level of the water tank; in response to the first water level reaching the preset water replenishment level, water replenishment is stopped to release the first water shortage state.

[0232] Among them, the preset water replenishment level can be estimated based on the remaining cooking time.

[0233] Exemplarily, the steam oven further includes a water inlet pipe and a water inlet valve, wherein the water inlet pipe connects the water inlet and the water tank. The water inlet valve is opened, and water is transported to the water tank through the water inlet pipe for water replenishment. After the water level in the water tank reaches a preset water replenishment level, the water inlet valve is closed to stop water replenishment, and the first water shortage state is released.

[0234] Furthermore, in order to prevent the water in the water tank from being left for a long time and thus breeding a large number of bacteria, the water in the water tank can be drained in time after cooking is completed. As a feasible implementation, the control system further includes a drainage module, which is used to drain the water in the water tank in response to a steam oven stop instruction.

[0235] In this embodiment, the remaining water in the water tank can be automatically drained after cooking is completed, so as to prevent the water in the water tank from being left for a long time and breeding a large number of bacteria, thereby causing the water in the water tank to deteriorate or become smelly.

[0236] Exemplarily, the steam oven further comprises a drain pipe and a drain valve, wherein the drain pipe connects the drain port and the water tank. The drain valve is opened to drain the remaining water in the water tank through the drain pipe until the drain valve is closed after the water tank is emptied.

[0237] In a specific application scenario, the control process after cooking starts is as follows: Figure 2 shown.

[0238] First, control the water pump and steam generation module to start working. Start the water pump to pump water from the water tank to the steam generation module, and start the steam generation module to heat the water to generate steam. Then monitor the working current of the water pump when pumping water and the current temperature of the steam generation module in real time. Obtain the working status of the water pump and determine whether the working status of the water pump is normal.

[0239] If it is normal, then determine whether the working current of the water pump is less than the preset no-load current. If it is, it means that the water pump is no-load, that is, there is no water in the water tank. And determine whether the current temperature of the steam generation module is greater than the preset temperature threshold. If it is, it means that the temperature of the steam generation module is too high, that is, there is no water in the steam generation module. In the case that both the water tank and the steam generation module are short of water, the water tank is set to be in a water shortage state.

[0240] If it is abnormal, it means that the working current of the water pump is inaccurate, and then it can be directly judged whether the water tank is in a water shortage state based on the current temperature of the steam generation module.

[0241] Then, when the water tank is in a water shortage state, water is added to the water tank in a timely manner, and the water level of the water tank is monitored at the same time, until the water level of the water tank reaches a preset water replenishment level, the water replenishment is stopped, and finally the water shortage state is relieved.

[0242] Before the water pump and steam generator module start working, it can be detected whether the water in the water tank is sufficient to complete the cooking, so as to further ensure that the cooking process is continuous and reduce the possibility of adding water during the cooking process.

[0243] As a feasible implementation mode, the start-up module 501 is used to obtain the target water level corresponding to the target recipe and the second water level of the water tank; determine whether the second water level is greater than the target water level; if not, set the water tank to a second water shortage state and output a prompt message; if so or in response to the second water shortage state being released, control the water pump and the steam generating module to start working.

[0244] The target recipe is usually preset in the control program of the steam oven, and different recipes have different preset cooking conditions, such as cooking time, cooking temperature, and other working parameters for controlling the operation of the steam oven. As a feasible implementation, the start module 501 is also used to obtain the cooking time of the target recipe; and determine the target water level according to the cooking time.

[0245] In this embodiment, the target water level required to complete the target recipe can be estimated according to the cooking time of the target recipe, and the water tank is replenished with water in advance before the steam oven starts working to ensure that there is enough water in the water tank to achieve the preset cooking conditions of the target recipe.

[0246] Exemplarily, the target water level can be calculated as follows:

[0247] V ′ =P1vT,

[0248] P1=A(Temp0-Temp1)P0

[0249] Among them, V ′ It is used to characterize the target water level, P1 is used to characterize the required power during the cooking process, v is used to characterize the water consumption per watt of power per minute (W / min), T is used to characterize the cooking time, A is used to characterize the power coefficient, Temp0 is used to characterize the preset cooking temperature, Temp1 is used to characterize the current detection temperature, and P0 is used to characterize the basic power.

[0250] In this embodiment, when the water tank is in the second water shortage state, the second water shortage state can be released manually or automatically.

[0251] As a feasible implementation, the start module 501 is also used to add water to the water tank and monitor the third water level of the water tank; in response to the third water level reaching the target water level, the water addition is stopped to release the second water shortage state.

[0252] The steam oven usually includes a water level detection module, through which the water level of the water tank is monitored.

[0253] The method of automatically releasing the second water shortage state mainly depends on the water level detection module. If the water level detection module fails, resulting in an incorrect third water level, it is necessary to wait for the user to manually release the second water shortage state. Therefore, different methods can be selected to release the second water shortage state in combination with the second working state of the water level detection module.

[0254] As another feasible implementation, the start-up module 501 is also used to obtain the second working state of the water level detection module; if the second working state is normal, water is added to the water tank and the third water level of the water tank is monitored; in response to the third water level reaching the target water level, the second water shortage state is released; if the second working state is abnormal, in response to the cancellation of the prompt information, the second water shortage state is released.

[0255] In this embodiment, when the second working state of the water level detection module is normal, water can be automatically added to the water tank until the second water level of the water tank reaches the target water level to release the second water shortage state. When the second working state of the water level detection module is abnormal, it is necessary to wait for the user to manually cancel the prompt information, and then release the second water shortage state in response to the cancellation of the prompt information.

[0256] In combination with the above implementation, in another specific application scenario, the control process before cooking starts is as follows: Figure 3 shown.

[0257] In which, whether the water level detection module is faulty usually requires corresponding professional knowledge to be able to judge. Based on this, this embodiment also provides a user-operable method for judging whether the water level detection module is faulty.

[0258] As a feasible implementation mode, the start-up module 501 is also used to respond to the water tank being taken out, obtain the water tank-free detection value through the water level detection module; determine whether the water tank-free detection value is less than the second water level; if so, set the second working state to normal; if not, set the second working state to abnormal.

[0259] Specifically, the user can take out the water tank and judge for himself whether there is enough water in the water tank. After the user takes out the water tank, the water level detection module obtains the detection value of no water tank, and compares the detection value of no water tank with the first water level. Under normal circumstances, the detection value of no water tank should be less than the first water level. Therefore, when the detection value of no water tank is less than the first water level, it is normal to set the second working state of the water level detection module, otherwise, it is abnormal to set the second working state of the water level detection module. After the user resets the water tank, it can be judged whether to automatically replenish water or wait for the user to manually cancel the prompt information according to the second working state just set.

[0260] Because water level detection modules produced in different batches and by different manufacturers are installed on the support side walls of the water tanks in different steam ovens, there is an installation gap deviation and a certain amount of wear on the water level detection modules during use. As a result, when the water levels in different steam ovens are the same, different steam ovens will have different detection values ​​due to the water level detection modules, which in turn will lead to different water levels reflected by the detection values.

[0261] Therefore, this embodiment also provides a method for automatically calibrating the water tank for the user. The user can perform a water tank calibration based on the water level detection module regularly as needed to maintain the detection accuracy of the water level detection module at a high level.

[0262] As a feasible implementation mode, the above-mentioned control system also includes a water tank calibration module, which is used to respond to a water tank calibration instruction, replenish water to the water tank and monitor the fourth water level in the water tank; in response to the fourth water level reaching the maximum water level of the water tank, obtain a new full water detection value through the water level detection module to update the default full water detection value; drain the water in the water tank; monitor whether the water tank is empty; in response to the water tank being empty, obtain a new water-free detection value through the water level detection module to update the default water-free detection value.

[0263] The water level of the water tank is calculated based on the collected detection value of the water level detection module, the default no-water detection value, the default full-water detection value and the maximum water level.

[0264] Specifically, the water level detection module can select a capacitive water level sensor, and the capacitive water level sensor is installed on the side wall of the support of the water tank. The user issues a water tank calibration command through the water tank calibration button, and then the water tank calibration can be fully automatically performed based on the water level detection module.

[0265] For example, refer to Figure 4 , first add water to the water tank and monitor the water level of the water tank at the same time. When the water level of the water tank reaches the maximum water level, the new full water capacitance value is obtained through the capacitive water level sensor to update the default full water capacitance value. Then the water in the water tank is drained, and the working current of the water pump when pumping water is used to determine whether the water tank is empty. Finally, after the water tank is emptied, the new waterless capacitance value is obtained through the capacitive water level sensor to update the default waterless capacitance value.

[0266] Among them, the relationship between the current water level of the water tank and the capacitance value can be expressed as:

[0267]

[0268] Among them, V now It is used to represent the current water level of the water tank, V1 is used to represent the default maximum water level of the water tank, V0 is used to represent the default minimum water level of the water tank (the default is 0), Cnow Used to represent the capacitance value currently collected by the water level detection module. C1 is used to represent the default maximum capacitance value, and C0 is used to represent the default minimum capacitance value.

[0269] As a feasible implementation, the water tank calibration module is also used to control the water pump to pump water; monitor the working current of the water pump when pumping water; until the working current is less than or equal to the preset no-pump current, it is determined that the water tank is empty.

[0270] In this embodiment, whether the water tank is empty is determined by the working current of the water pump when pumping water. That is, when the working current of the water pump when pumping water gradually decreases to less than or equal to the preset empty pumping current, it can be considered that the water tank is empty.

[0271] Example 4

[0272] This embodiment provides a steam oven, including the control system in Embodiment 3.

[0273] For example, refer to Figure 6 The steam oven includes a steam generating module, a water tank and the above control system. A water pump is provided between the steam generating module and the water tank, the water tank is provided on a water tank support, and a water level detection module is provided on the side wall of the water tank support. The control system is electrically connected to the steam generating module, the water pump and the water level detection module respectively, so as to monitor the water level of the water tank through the water level detection module, and respectively control the steam generating module and the water pump to implement the steps of the above control method.

[0274] Example 5

[0275] Figure 7 The structure of one electronic device disclosed in the present invention is shown. The electronic device includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the program, the control method of the steam oven is implemented. Figure 7 The electronic device 60 shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present disclosure.

[0276] like Figure 7 As shown, the electronic device 60 may also be in the form of a general-purpose computing device, for example, it may be a server device. The components of the electronic device 60 may include, but are not limited to: at least one processor 61, at least one memory 62, and a bus 63 connecting different system components (including the memory 62 and the processor 61).

[0277] The bus 63 includes a data bus, an address bus, and a control bus.

[0278] The memory 62 may include a volatile memory, such as a random access memory (RAM) 621 and / or a cache memory 622 , and may further include a read-only memory (ROM) 623 .

[0279] The memory 62 may also include a program / utility 625 having a set (at least one) of program modules 624, such program modules 624 including but not limited to: an operating system, one or more application programs, other program modules, and program data, each of which or some combination may include an implementation of a network environment.

[0280] The processor 61 executes various functional applications and data processing by running the computer programs stored in the memory 62, such as the control method of the steam oven disclosed above.

[0281] The electronic device 60 may also communicate with one or more external devices 64 (e.g., keyboards, pointing devices, etc.). Such communication may be performed via an input / output (I / O) interface 65. Furthermore, the model generating device 60 may also communicate with one or more networks (e.g., a local area network (LAN), a wide area network (WAN), and / or a public network, such as the Internet) via a network adapter 66. Figure 7 As shown, the network adapter 66 communicates with other modules of the model-generated device 60 via the bus 63. It should be understood that, although not shown in the figure, other hardware and / or software modules can be used in conjunction with the model-generated device 60, including but not limited to: microcode, device drivers, redundant processors, external disk drive arrays, RAID (disk array) systems, tape drives, and data backup storage systems, etc.

[0282] It should be noted that although several units / modules or sub-units / modules of the electronic device are mentioned in the above detailed description, this division is merely exemplary and not mandatory. In fact, according to the embodiments of the present disclosure, the features and functions of two or more units / modules described above can be embodied in one unit / module. Conversely, the features and functions of one unit / module described above can be further divided into multiple units / modules to be embodied.

[0283] The present disclosure also provides a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, the control method of the steam oven is implemented.

[0284] The readable storage medium may include but is not limited to: a portable disk, a hard disk, a random access memory, a read-only memory, an erasable programmable read-only memory, an optical storage device, a magnetic storage device or any suitable combination of the above.

[0285] In a possible implementation manner, the present disclosure may also be implemented in the form of a program product, which includes a program code. When the program product is run on a terminal device, the program code is used to enable the terminal device to execute and implement the above-mentioned control method for the steam oven.

[0286] Among them, the program code for executing the present disclosure can be written in any combination of one or more programming languages, and the program code can be executed completely on the user device, partially on the user device, as an independent software package, partially on the user device and partially on a remote device, or completely on the remote device.

[0287] Although the specific embodiments of the present disclosure are described above, those skilled in the art should understand that this is only an example, and the protection scope of the present disclosure is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present disclosure, but these changes and modifications all fall within the protection scope of the present disclosure.

Claims

1. A method for controlling a steam oven, characterized in that: The steam oven comprises a steam generating module and a water tank, and a water pump is provided between the steam generating module and the water tank; The control method comprises: In response to a steam oven start instruction, controlling the water pump and the steam generating module to start working; monitoring the working current of the water pump when pumping water and the current temperature of the steam generating module; Monitoring whether the water tank is in a first water shortage state according to the working current and the current temperature; In response to the water tank being in a first water shortage state, water is replenished into the water tank until the first water shortage state is resolved.

2. The control method according to claim 1, characterized in that: The step of monitoring whether the water tank is in a first water shortage state according to the working current and the current temperature comprises: Acquire a first working state of the water pump; Determining whether the first working state is normal; If yes, when the working current is less than the preset no-load current and the current temperature is greater than the preset temperature threshold, the water tank is set to be in the first water shortage state; If not, when the current temperature is greater than the preset temperature threshold, setting the water tank to the first water shortage state; and / or, The step of replenishing water to the water tank until the first water shortage state is relieved comprises: Refilling the water tank with water and monitoring a first water level in the water tank; In response to the first water level reaching a preset water replenishment level, stopping water replenishment and releasing the first water shortage state; and / or, The control method further comprises: In response to a steam oven stop instruction, the water in the water tank is drained.

3. The control method according to claim 2, characterized in that: The step of obtaining the first working state of the water pump comprises: Monitoring the water level change of the water tank within a preset monitoring time; Determining whether the working current exceeds the preset no-load current; If yes, when the water level change indicates that the water in the water tank is reduced, it is determined that the first working state is normal, and when the water level change indicates that the water in the water tank is not reduced, it is determined that the first working state is abnormal; If not, when the water level change indicates that the water in the water tank is reduced, it is determined that the first working state is abnormal; when the water level change indicates that the water in the water tank is not reduced, it is determined that the first working state is normal.

4. The control method according to claim 1, characterized in that: The step of controlling the water pump and the steam generating module to start working comprises: Obtaining a target water level corresponding to a target recipe and a second water level of the water tank; determining whether the second water level is greater than the target water level; If not, setting the water tank to a second water shortage state and outputting a prompt message; If or in response to the second water shortage state being released, the water pump and the steam generation module are controlled to start working.

5. The control method according to claim 4, characterized in that: The step of obtaining the target water level corresponding to the target recipe includes: Obtaining the cooking time of the target recipe; determining the target water level according to the cooking time; and / or, Before the step of responding to the second water shortage state being released, the method further includes: Refilling water into the water tank and monitoring a third water level of the water tank; In response to the third water level reaching the target water level, water replenishment is stopped and the second water shortage state is released.

6. The control method according to claim 4, characterized in that: The steam oven also includes a water level detection module; Before the step of responding to the second water shortage state being released, the method further includes: Acquire a second working state of the water level detection module; If the second working state is normal, replenishing water to the water tank and monitoring a third water level of the water tank; In response to the third water level reaching the target water level, releasing the second water shortage state; If the second working state is abnormal, in response to canceling the prompt information, the second water shortage state is released.

7. The control method according to claim 6, characterized in that: The step of obtaining the second working state of the water level detection module comprises: In response to the water tank being taken out, obtaining a water tank-free detection value through the water level detection module; Determining whether the water tank-free detection value is less than the second water level; If yes, setting the second working state to normal; If not, setting the second working state to be abnormal; and / or, The control method further comprises: In response to a water tank calibration instruction, replenishing water to the water tank and monitoring a fourth water level of the water tank; In response to the fourth water level reaching the maximum water level of the water tank, acquiring a new full water detection value through the water level detection module to update a default full water detection value; draining the water in the water tank; monitoring whether the water tank is empty; In response to the water tank being emptied, obtaining a new water-free detection value through the water level detection module to update a default water-free detection value; The water level of the water tank is calculated based on the collected detection value of the water level detection module, the default no-water detection value, the default full-water detection value and the maximum water level.

8. The control method according to claim 7, characterized in that: The step of monitoring whether the water tank is empty comprises: Controlling the water pump to pump water; Monitoring the working current of the water pump when pumping water; Until the working current is less than or equal to the preset no-load current, it is determined that the water tank is empty.

9. A control system for a steam oven, characterized in that: The steam oven comprises a steam generating module and a water tank, and a water pump is provided between the steam generating module and the water tank; The control system comprises: A starting module, used for controlling the water pump and the steam generating module to start working in response to a steam oven starting instruction; A monitoring module, used to monitor the working current of the water pump when pumping water and the current temperature of the steam generating module; a water shortage detection module, used for monitoring whether the water tank is in a first water shortage state according to the working current and the current temperature; The water replenishment module is used for replenishing water to the water tank in response to the water tank being in a first water shortage state until the first water shortage state is released.

10. A steam oven, characterized in that: Includes the control system described in claim 9.

Images