A steam oven, a drainage control method, an electronic device, and a storage medium.

Abstract

This application provides a steam-roasting equipment, a drainage control method, electronic equipment, and a storage medium, including a steam generator, a water-vapor separator, a clean water tank, a wastewater tank, a water tank, a water pump, an inlet pipe, a solenoid valve, a water level detection switch, and a controller. The bottom of the water tank is connected to the water pump and one end of the inlet pipe via a first pipe connector. The other end of the water pump is connected to the clean water tank. The other end of the inlet pipe is connected to the lower end of the steam generator, the lower end of the water-vapor separator, and the inlet of the wastewater tank via a second pipe connector. The inlet pipe is horizontally oriented and slopes downwards to the right. The upper end of the water tank is at the same height as the upper end of the steam generator to form a communicating vessel structure. The upper end of the steam generator is connected to the steam inlet of the water-vapor separator. The steam outlet of the water-vapor separator is connected to the inner cavity of the steam-roasting equipment. The solenoid valve is installed at the inlet of the wastewater tank. This application effectively prevents problems such as clean water tank contamination, deformation, and food odor transfer.

Description

Technical Field

[0001] This invention relates to the field of kitchen appliance technology, and more specifically, to a steam oven, a drainage control method, an electronic device, and a storage medium. Background Technology

[0002] Steam ovens are kitchen appliances that combine steaming and baking functions. The steaming function generates steam by heating water, and the steam is evenly distributed in a closed space to cook the food.

[0003] Existing steam ovens have a water tank, a water pump, and a drain pump. When using the steam, humidified baking, or manual humidification functions, the water pump draws water from the water tank to the pipes and steam generator to produce steam. When cooking is complete and the oven is turned off, the drain pump draws the water in the pipes and steam generator back to the water tank.

[0004] However, this method has the following drawbacks: 1) During the steaming process, the organic molecules of the food vaporize at high temperature and diffuse into the steam generator and water pipes, thus contaminating the water in the pipes; after cooking, the water is pumped back and contaminates the water in the tank, which poses a risk of producing odors; 2) The steam generated by the contaminated water will cause food to have cross-contamination of flavors; 3) When the high-temperature pipe water is pumped back into the tank, the tank is at risk of deformation due to long-term and repeated hot and cold cycles. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a steaming and baking device, a drainage control method, an electronic device, and a storage medium to prevent contamination of pipes and water tanks, prevent food from absorbing odors, and prevent water tank deformation.

[0006] In a first aspect, a steam-roasting device is provided, comprising a steam generator, a water-vapor separator, a clean water tank, a wastewater tank, a water tank, a water pump, a water inlet pipe, a solenoid valve, a water level detection switch, and a controller, wherein...

[0007] A water level sensor is installed inside the water tank. The bottom of the water tank is connected to one end of the water pump and the inlet pipe via a first pipe connector. The other end of the water pump is connected to the clean water tank. The other end of the inlet pipe is connected to the lower end of the steam generator, the lower end of the water-steam separator, and the inlet of the wastewater tank via a second pipe connector. The inlet pipe is inclined to the lower right in the direction of connection with the second pipe connector. The upper end of the water tank is at the same height as the upper end of the steam generator to form a communicating vessel structure. The upper end of the steam generator is connected to the steam inlet of the water-steam separator. The steam outlet of the water-steam separator is connected to the inner cavity of the steam-roasting equipment. A check valve is installed at the drain outlet of the water-steam separator to allow the separated water to flow into the wastewater tank. A solenoid valve is installed at the inlet of the wastewater tank. A water level detection switch is installed inside the wastewater tank. The water level sensor, water level detection switch, solenoid valve, water pump, and steam generator are all electrically connected to the controller.

[0008] Optionally, a temperature sensor and a temperature controller are installed on the outer wall of the steam generator, and the temperature sensor and temperature controller are electrically connected to the controller.

[0009] Secondly, a drainage control method for a steam oven is provided, the method comprising:

[0010] In response to the shutdown command after the steam oven turns on the steam function, the detection signal of the water level detection switch in the wastewater tank is obtained;

[0011] When the detection signal indicates that the water level in the wastewater tank has not reached the full water level, a first command is sent to the solenoid valve. The first command instructs the solenoid valve to open, so that the residual water in the steam generator, water-steam separator, water tank and inlet pipe is discharged into the wastewater tank.

[0012] Optionally, the method further includes:

[0013] During the drainage process, the water level signal from the water level sensor is acquired;

[0014] If the water level signal indicates that the water level in the tank has dropped to the preset lower limit, a second command is sent to the solenoid valve; the second command instructs the solenoid valve to delay for a first preset time before closing.

[0015] Optionally, the method further includes:

[0016] If the first preset time has not been reached and the water level in the wastewater tank is detected to be full, a third command is sent to the solenoid valve. The third command instructs the solenoid valve to continue to open until the first preset time is reached.

[0017] Optionally, after drainage is completed, the method further includes:

[0018] A fourth instruction is sent to the water pump, which instructs the water pump to pump the water in the clean water tank to the water tank, inlet pipe, steam generator and water vapor separator for self-cleaning.

[0019] When the pumping completion condition is met, a fifth command is sent to the water pump, instructing the water pump to shut down; simultaneously, a sixth command is sent to the solenoid valve, instructing the solenoid valve to open for a second preset duration to discharge the cleaning water into the wastewater tank; wherein, the pumping completion condition is one of the following: condition one, the water level in the tank reaches the preset upper limit and continues to pump water for a third preset duration after reaching the preset upper limit; condition two, the water level in the tank is between the preset lower limit and the preset upper limit, and the pumping time reaches a fourth preset duration; condition three, the water level in the tank never exceeds the preset lower limit and the pumping time reaches the fourth preset duration.

[0020] Optionally, when the pumping completion condition is condition one or condition two, the method further includes the following steps before sending the sixth command to the solenoid valve:

[0021] A seventh command is sent to the steam generator, which instructs the steam generator to start for a fifth preset duration in order to flush the pipes with hot water.

[0022] Optionally, before drainage, the method further includes:

[0023] Acquire the temperature signal from the temperature sensor installed on the outer wall of the steam generator;

[0024] Compare the temperature signal with the preset scaling temperature;

[0025] If the temperature of the temperature sensor remains greater than or equal to the preset scaling temperature within the sixth preset time period, a corresponding descaling reminder command will be sent.

[0026] Optionally, the method for determining the shutdown command after the steam function of the steam oven is activated includes:

[0027] Get the last start time of the steam generator;

[0028] Determine the time difference between the power-on time and the power-off command issuance time;

[0029] If the time difference is greater than the preset time difference, then the shutdown command is determined to be the shutdown command after the steam oven has turned on the steam function.

[0030] Thirdly, an electronic device is provided, including a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other through the communication bus;

[0031] Memory, used to store computer programs;

[0032] When a processor executes a program stored in memory, it implements any of the steps described in the second aspect.

[0033] Fourthly, a computer-readable storage medium is provided, wherein a computer program is stored therein, and when executed by a processor, the computer program implements the steps of any of the methods described in the second aspect.

[0034] The steaming and baking equipment, drainage control method, electronic equipment, and storage medium provided in this invention embodiment utilize a wastewater tank to discharge residual water from the steam generator, water inlet pipe, and water tank into the wastewater tank using gravity, eliminating the need to pump it back to the clean water tank. This avoids contamination of the clean water tank, effectively prevents food from mixing flavors, and prevents deformation of the clean water tank. Furthermore, during the steaming process, a water-vapor separator can isolate the water vapor from the high-temperature vaporization of organic molecules in the food, directly discharging the separated vaporized water into the wastewater tank. This prevents the high-temperature vaporization of organic molecules in the food from diffusing into the steam generator and pipelines.

[0035] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0036] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 The three-dimensional structure of the steam-baking equipment provided in the embodiment of the present invention is shown;

[0038] Figure 2 This shows a front view of the water circuit structure of a steam oven provided in an embodiment of the present invention;

[0039] Figure 3 A side view of the water circuit structure of a steam oven provided in an embodiment of the present invention is shown;

[0040] Figure 4 A flowchart illustrating a drainage control method based on a steam oven provided in an embodiment of the present invention is shown.

[0041] Figure 5 A schematic diagram of the structure of an electronic device provided in an embodiment of the present invention is shown.

[0042] Explanation of main component symbols: 1. Water pump; 2. Clean water tank; 3. Water tank; 4. Inlet pipe; 5. Wastewater tank; 6. Steam generator; 7. Water-steam separator; 8. Steam outlet; 9. Thermostat; 10. Solenoid valve; 11. Temperature sensor; 12. Water level detection switch. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0044] This invention provides a steam-roasting device, such as... Figures 1-3 As shown, it includes a steam generator 6, a water-steam separator 7, a clean water tank 2, a wastewater tank 3, a water tank 3, a water pump 1, an inlet pipe 4, a solenoid valve 10, a water level detection switch 12, and a controller.

[0045] A water level sensor is installed inside the water tank 3. The bottom of the water tank 3 is connected to one end of the water pump 1 and the water inlet pipe 4 through the first pipe connector. The other end of the water pump 1 is connected to the clean water tank 2. The other end of the water inlet pipe 4 is connected to the lower end of the steam generator 6, the lower end of the water-steam separator 7, and the inlet of the wastewater tank 5 through the second pipe connector. The water inlet pipe 4 is inclined to the lower right in the direction of connection with the second pipe connector, so that water can flow into the wastewater tank 5 under its own gravity. The upper end of the water tank 3 is at the same height as the upper end of the steam generator 6 to form a communicating vessel structure. The upper end of the steam generator 6 is connected to the steam inlet of the water-steam separator 7. The steam outlet 8 of the water-steam separator 7 is connected to the inner cavity of the steam oven. A check valve is installed at the drain outlet of the water-steam separator 7 so that the separated water flows into the wastewater tank 5. Solenoid valve 10 is installed at the inlet of wastewater tank 5, water level detection switch 12 is installed inside wastewater tank 5, and water level sensor, water level detection switch 12, solenoid valve 10, water pump 1 and steam generator 6 are electrically connected to controller.

[0046] In this embodiment of the invention, the water level sensor can be one of a float-type water level sensor, a pressure-type water level sensor, or a capacitive water level sensor. In a specific example, a float-type water level sensor can be used. This type of sensor works by using a float that moves up and down with changes in water level to transmit signals mechanically or electrically. It has a simple structure, low cost, and high reliability. The first pipe connector can be a tee, and the second pipe connector can be a four-way connector.

[0047] The water tank 3 and the steam generator 6 form a communicating vessel structure, with the same liquid level in both. The liquid level in the steam generator 6 is indicated by the water level in the water tank 3.

[0048] In this embodiment of the invention, the steaming and baking equipment can be a steam oven, a regular oven, or a steam-baking combination oven, etc.

[0049] The working principle of this steam oven is as follows:

[0050] When the steaming, humidifying, or manual humidifying functions are activated, the controller receives a signal from the water level sensor. If the signal indicates that the water level in water tank 3 is between the low and high levels, the steam generator 6 can be directly turned on to generate steam. If the signal indicates that the water level in water tank 3 is below the low level, a drive signal is sent to the water pump 1 to pump water from the clean water tank 2 into water tank 3 and the inlet pipe 4. Pumping stops when the high water level in water tank 3 is detected. Then, the steam generator 6 is started for heating. The steam enters the water-vapor separator, and after a period of time, the steam enters the inner cavity of the steam-baking equipment from the steam outlet 8 of the water-vapor separator. During the steam replenishment process, the water level in water tank 3 gradually drops to the low level. At this point, the steam generator 6 is turned off, and the water replenishment and heating process is repeated until the clean water tank 2 reports a water shortage or the food cooking process is complete.

[0051] In this embodiment of the invention, the steam generated by the steam generator 6 enters the inner cavity of the steam-baking equipment after passing through a water-vapor separator. The water-vapor separator 7 improves the quality of the steam by removing entrained moisture from it. It separates water droplets from the steam through physical methods (such as centrifugal force, gravity sedimentation, filtration, etc.).

[0052] In this embodiment of the invention, the steam generator 6 operates intermittently during the steam addition process. That is, when the water level in the water tank 3 drops to a low level, the steam generator 6 is turned off to replenish the water. After the water replenishment is completed, the steam generator 6 is turned on again. This can save energy and effectively prevent the steam generator 6 from burning dry when there is a lack of water, thereby improving the safety of the steam oven.

[0053] When the food is cooked and the machine is turned off, the steam oven starts to drain water. It opens the solenoid valve 10 and uses the gravity of the water to drain the water from the water tank 3, steam generator 6, water vapor separator 7 and water inlet pipe 4 into the wastewater tank 5. The specific process of drainage will be described in detail in the following method embodiment, and will not be repeated here.

[0054] Through the above embodiments, it can be understood that the present invention, by setting up a wastewater tank 5, utilizes the gravity of water to discharge residual water from the steam generator 6, water inlet pipe 4, and water tank 3 into the wastewater tank 5, without needing to pump it back to the clean water tank 2, thereby avoiding contamination of the clean water tank 2, effectively preventing food from mixing flavors, and preventing deformation of the clean water tank 2. Furthermore, during the steam addition process, the water vapor separator 7 can isolate the water vapor from the high-temperature vaporization of organic molecules in the food, and directly discharge the separated vaporized water into the wastewater tank 5, thus preventing the high-temperature vaporization of organic molecules in the food from diffusing into the steam generator 6 and pipelines.

[0055] Although the above embodiments have completed the drainage, it is difficult to completely remove the water from the inlet pipe 4. The residual water is prone to scale formation after evaporation. The inlet pipe 4 is too long, and once there is scale, it will accelerate the scaling speed. After the scale in the pipe accumulates to a certain extent, there will be a phenomenon of poor water pumping and false alarm of water shortage, and poor drainage will lead to residual water and accelerated scaling. It will also cause the steam generator 6 to overheat and trip due to insufficient water supply.

[0056] Therefore, based on the above embodiments, a temperature sensor 11 and a temperature controller 9 are installed on the outer wall of the steam generator 6, and the temperature sensor 11 and the temperature controller 9 are electrically connected to the controller respectively.

[0057] Experiments revealed that if water flows normally through the pipes, the surface temperature of the steam generator 6 will be lower than the tripping temperature of the thermostat 9. However, if scale buildup in the pipes obstructs water flow, the surface temperature of the steam generator 6 will rise to varying degrees. When the scale buildup becomes severe (water has difficulty or cannot flow into the steam generator 6), its surface temperature will rapidly rise to the tripping temperature of the thermostat 9, at which point the steam generator 6 will cease operation. Therefore, the surface temperature of the steam generator 6 during heating can indirectly reflect the degree of scale buildup in the water system. Thus, this embodiment of the invention uses a temperature sensor 11 installed on the outer wall of the steam generator 6 to detect its surface temperature. This real-time temperature reading allows for timely assessment of the scale buildup level in the pipes, enabling prompt descaling measures.

[0058] Based on the same inventive concept, a drainage control method for a steam oven based on the first aspect is provided, such as... Figure 4 As shown, the method includes the following steps:

[0059] Step S401: In response to the shutdown command after the steam oven turns on the steam function, obtain the detection signal of the water level detection switch 12 in the wastewater tank 5.

[0060] In this step, the steam function can be, for example, steaming, humidifying baking, or manual humidification. After the steam baking equipment has run the steam function and enters the shutdown state, it receives a detection signal from the water level monitoring switch in wastewater tank 5. This prevents accidental activation of the subsequent drainage process due to accidental pressing or operation of the shutdown button, ensuring that drainage can only occur after the steam function has been run.

[0061] In a specific example, when a shutdown command is detected, the most recent start time of the steam generator 6 can be obtained. This start time is compared with the time the shutdown command was issued, and the time difference between the two is calculated. If the time difference is greater than the preset time difference, it means that the shutdown command was initiated after the steam oven had run the steam function. If the time difference is less than the preset time difference, it means that the two times are close, for example, 10 seconds. In this case, the shutdown button may have been accidentally pressed or operated. In this case, drainage is not required, thus improving the accuracy of drainage control and preventing the drainage program from being initiated due to accidental operation.

[0062] Step S402: When the detection signal indicates that the water level in the wastewater tank 5 has not reached the full water level, a first command is sent to the solenoid valve 10. The first command instructs the solenoid valve 10 to open so that the residual water in the steam generator 6, water-steam separator 7, water tank 3 and water inlet pipe 4 is discharged into the wastewater tank 5.

[0063] In this embodiment of the invention, the water inlet pipe 4 is inclined, and the steam generator 6, water vapor separator 7 and water tank 3 are all located above the wastewater tank 5. Therefore, when the solenoid valve 10 is opened, the gravity of the water can be used to discharge the residual water in the steam generator 6, water vapor separator 7, water tank 3 and water inlet pipe 4 into the wastewater tank 5.

[0064] Before draining, check the water level in wastewater tank 5. If the water level is full, empty the water in wastewater tank 5 before draining to ensure that the wastewater tank 5 can hold the discharged residual water and will not overflow.

[0065] In this embodiment of the invention, the residual water in the steam generator 6, water inlet pipe 4, and water tank 3 is discharged into the wastewater tank 5 by utilizing the gravity of water, without having to pump it back to the clean water tank 2. This avoids contamination of the clean water tank 2, effectively prevents food from tasting, and also prevents the clean water tank 2 from deforming.

[0066] Based on the above embodiments, the method further includes:

[0067] Step S403: During the drainage process, acquire the water level signal from the water level sensor.

[0068] Step S404: If the water level signal indicates that the water level in the water tank 3 has dropped to the preset lower limit, a second command is sent to the solenoid valve 10; the second command instructs the solenoid valve 10 to delay for a first preset time before closing.

[0069] In one example, the first preset duration is, for example, 30 seconds. When the water level in the water tank 3 is lower than the low water level, the solenoid valve 10 continues to be open for 30 seconds to ensure that the water in the water tank 3 and the water inlet pipe 4 are drained.

[0070] Based on the above embodiments, the method further includes:

[0071] Step S405: If the first preset time has not been reached and the water level in the wastewater tank 5 is detected to be full, a third command is sent to the solenoid valve 10. The third command instructs the solenoid valve 10 to continue to open until the first preset time is reached.

[0072] In this step, wastewater tank 5 is equipped with a full water level line and an overflow water level line. The full water level line is lower than the overflow water level line. During design, the height of the overflow water level line should be sufficient to accommodate the total water volume in water tank 3, steam generator 6, and inlet pipe 4. Therefore, if the delayed closing time of solenoid valve 10 has not yet been reached, and the water level in wastewater tank 5 has already reached the full position, solenoid valve 10 can continue to be opened to support the completion of this drainage. After drainage is completed, solenoid valve 10 automatically closes.

[0073] In another embodiment, after drainage is completed, a reminder can be displayed on the interface of the steam oven to empty the wastewater.

[0074] Although the above embodiments have completed the drainage, it is difficult to completely remove the water from the inlet pipe 4. The residual water is prone to scale formation after evaporation. The inlet pipe 4 is too long, and once there is scale, it will accelerate the scaling speed. After the scale in the pipe accumulates to a certain extent, there will be phenomena such as poor water pumping, false alarms of water shortage, and poor drainage, with residual water accelerating scaling.

[0075] Therefore, based on the above embodiments, after drainage is completed, the method further includes:

[0076] Step S406: Send a fourth instruction to the water pump 1, which instructs the water pump 1 to pump the water in the clean water tank 2 to the water tank 3, the water inlet pipe 4, the steam generator 6 and the water vapor separator 7 for self-cleaning.

[0077] Step S407: When the pumping completion condition is met, a fifth command is sent to the water pump 1, which instructs the water pump 1 to shut down; at the same time, a sixth command is sent to the solenoid valve 10, which instructs the solenoid valve 10 to open for a second preset time to discharge the cleaning water into the wastewater tank 5.

[0078] The pumping is completed under one of the following conditions: Condition 1 is that the water level in water tank 3 reaches the preset upper limit and continues to pump water for a third preset duration after reaching the preset upper limit; Condition 2 is that the water level in water tank 3 is between the preset lower limit and the preset upper limit, and the pumping time reaches the fourth preset duration; Condition 3 is that the water level in water tank 3 never exceeds the preset lower limit and the pumping time reaches the fourth preset duration.

[0079] In a specific example, the third preset duration is, for example, 7 seconds. When the water level in the water tank 3 reaches the high water level, it means that the water level in the steam generator 6 has also reached the high water level. By continuing to pump for 7 seconds, the cleaning water can enter the water-vapor separator 7, thereby rinsing the water-vapor separator 7.

[0080] The fourth preset time is, for example, 30 seconds. When the water in the clean water tank 2 is insufficient, the second condition will occur, which is that the water level cannot be exceeded, but the water level is exceeded. As long as the water pumping time of 30 seconds is reached, it is considered that the water pumping is completed, and the self-cleaning of the steam generator 6 and the water inlet pipe 4 can also be completed.

[0081] When condition three occurs, it indicates that the water in the clean water tank 2 is severely insufficient, and the water in the water tank 3 and the steam generator 6 is also relatively low, but the self-cleaning of the water inlet pipe 4 can still be completed.

[0082] Through the above embodiments, it can be understood that the present invention can, through self-cleaning, at least ensure that the residual water in the water inlet pipe 4 is flushed and drained into the wastewater tank 5 by clean water, thereby slowing down the scaling rate and reducing the degree of scaling in the water inlet pipe 4.

[0083] Based on the above embodiments, when the pumping completion condition is condition one or condition two, before sending the sixth command to the solenoid valve 10, the method further includes:

[0084] Step S408: Send a seventh instruction to the steam generator 6, which instructs the steam generator 6 to start for a fifth preset duration in order to flush the pipes with hot water.

[0085] In one example, the fifth preset duration is, for example, 10 seconds. When the water pumping is completed under condition one or condition two, it means that there is a certain amount of water in the steam generator 6, and the heating function can be turned on to heat the cleaning water. Since the cleaning water in the water inlet pipe 4 and the cleaning water in the steam generator 6 are connected, the temperature of the cleaning water in the water inlet pipe 4 will also rise accordingly by heating the cleaning water in the steam generator 6. By heating the cleaning water, the self-cleaning effect is improved.

[0086] Scale buildup in water inlet pipe 4 can also prevent water from entering the steam generator 6, leading to overheating and power outages in the steam generator 6.

[0087] Therefore, based on the above embodiments, before drainage, the method further includes:

[0088] Step a): Obtain the temperature signal from the temperature sensor 11 installed on the outer wall of the steam generator 6.

[0089] The temperature sensor 11 collects the surface temperature of the steam generator 6 in real time. Experiments show that if water flows normally through the pipes, the surface temperature of the steam generator 6 will be lower than the tripping temperature of the thermostat 9. If scale buildup in the pipes obstructs water flow, the surface temperature of the steam generator 6 will rise to varying degrees. When the scale buildup becomes severe (water has difficulty or cannot flow into the steam generator 6), its surface temperature will rapidly rise to the tripping temperature of the thermostat 9, at which point the steam generator 6 will cease operation. Therefore, the surface temperature of the steam generator 6 during heating can indirectly reflect the degree of scale buildup in the water system.

[0090] Step b): Compare the temperature signal with the preset scaling temperature.

[0091] In this step, the pre-set scaling temperature is lower than the tripping temperature of the temperature controller 9, thereby ensuring timely descaling reminders and measures before a tripping occurs, thus preventing a tripping.

[0092] In another embodiment, the degree of scaling can be determined using different temperature thresholds. For example, a preset scaling temperature can be set to W1, and a normal operating temperature can be set to W0. These two temperatures can then be used to determine the degree of scaling. Specifically, if the surface temperature of the steam generator 6 is consistently below the normal operating temperature W0, the water inlet pipe 4 is considered unobstructed; if the surface temperature of the steam generator 6 is consistently above W0 but below W1, the water inlet pipe 4 is considered to have slight scaling; and if the surface temperature of the steam generator 6 is consistently at W1, the water inlet pipe 4 is considered to have severe scaling.

[0093] Step c): If the temperature of temperature sensor 11 is always greater than or equal to the preset scaling temperature within the sixth preset time period, a corresponding descaling reminder command is sent.

[0094] In this step, the sixth preset duration is, for example, 3 days. This is because if the steam generator 6 operates for a longer period of time, it may also cause the surface temperature to rise. However, this is not the norm. Only when the temperature remains stable at the preset scaling temperature for an extended period can it be concluded that scaling has occurred in the pipeline and that the scaling is severe. Therefore, by setting a sixth preset duration, this embodiment of the invention can ensure the accuracy of scaling alerts.

[0095] Step d): If the number of descaling reminder commands exceeds the preset number of reminders, a forced descaling reminder command is sent, and a forced shutdown command is sent to the steam generator 6 at the same time.

[0096] In one example, the preset number of reminders is 3. If more than 3 descaling reminders are issued, it indicates that the scale buildup is very severe and forced descaling is required.

[0097] In this embodiment of the invention, descaling can be performed by adding a descaling agent to the water purification tank 2, and the water in the water purification tank 2 can be high-temperature water. The descaling water in the water purification tank 2 is pumped to the water inlet pipe 4 by the water pump 1 to perform descaling.

[0098] The embodiments of the present invention can effectively prevent the steam generator from overheating and tripping.

[0099] Based on the same technical concept, embodiments of the present invention also provide an electronic device, such as... Figure 5 As shown, it includes a processor 501, a communication interface 502, a memory 503, and a communication bus 504, wherein the processor 501, the communication interface 502, and the memory 503 communicate with each other through the communication bus 504.

[0100] Memory 503 is used to store computer programs;

[0101] The processor 501, when executing the program stored in the memory 503, implements the steps of the drainage control method based on the steam oven.

[0102] The communication bus mentioned in the above electronic devices can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. This communication bus can be divided into address bus, data bus, control bus, etc. For ease of illustration, only one thick line is used to represent it in the diagram, but this does not mean that there is only one bus or one type of bus.

[0103] The communication interface is used for communication between the aforementioned electronic devices and other devices.

[0104] The memory may include random access memory (RAM) or non-volatile memory (NVM), such as at least one disk storage device. Optionally, the memory may also be at least one storage device located remotely from the aforementioned processor.

[0105] The processors mentioned above can be general-purpose processors, including central processing units (CPUs), network processors (NPs), etc.; they can also be digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components.

[0106] The computer program product for a drainage control method based on a steam oven provided in this embodiment of the invention includes a computer-readable storage medium storing program code. The instructions included in the program code can be used to execute the methods described in the preceding method embodiments. For specific implementation details, please refer to the method embodiments, which will not be repeated here.

[0107] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In addition, the terms "first", "second", "third", etc. are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0108] Finally, it should be noted that the above-described embodiments are merely specific implementations of the present invention, used to illustrate the technical solutions of the present invention, and not to limit it. The scope of protection of the present invention is not limited thereto. Although the present invention 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 can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments within the technical scope disclosed in the present invention, or make equivalent substitutions for some of the technical features; and these modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention. All should be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A steam roaster, characterized by, The utility model relates to a steam generator, water vapor separator, clean water tank, waste water tank, water tank, water pump, water inlet pipe, electromagnetic valve, water level detection switch and controller, wherein, The water tank is provided with a water level sensor, and the bottom of the water tank is connected with one end of the water pump and the water inlet pipe through first pipeline connectors respectively; the other end of the water pump is connected with the clean water tank; the other end of the water inlet pipe is connected with the lower end of the steam generator, the lower end of the water vapor separator and the inlet of the waste water tank through second pipeline connectors respectively; the water inlet pipe is inclined downward to the right in the direction connected with the second pipeline connectors; the upper end of the water tank is at the same height with the upper end of the steam generator to form a communicating vessel structure; the upper end of the steam generator is connected with the steam inlet of the water vapor separator; the steam outlet of the water vapor separator is communicated with the inner cavity of the steaming and baking equipment; a check valve is installed at the water outlet of the water vapor separator to make the separated water flow into the waste water tank; the electromagnetic valve is installed at the inlet of the waste water tank; the water level detection switch is installed inside the waste water tank; the water level sensor, the water level detection switch, the electromagnetic valve, the water pump and the steam generator are electrically connected with the controller respectively.

2. The combination according to claim 1, wherein The outer wall of the steam generator is provided with a temperature sensor and a temperature controller, which are electrically connected with the controller respectively.

3. A drain control method for a steam oven according to claim 1 or 2, characterized in that, The method comprises: obtaining the detection signal of the water level detection switch in the waste water tank in response to the shutdown instruction after the steaming and baking equipment starts the steam function; when the detection signal indicates that the water level in the waste water tank does not reach the full water level, sending a first instruction to the electromagnetic valve, which instructs the electromagnetic valve to open to make the residual water in the steam generator, the water vapor separator, the water tank and the water inlet pipe flow into the waste water tank.

4. The method of claim 3, wherein, The method further comprises: obtaining the water level signal of the water level sensor during the drainage process; if the water level signal indicates that the water level in the water tank drops to the preset lower limit, sending a second instruction to the electromagnetic valve; the second instruction instructs the electromagnetic valve to close after a first preset time.

5. The method of claim 4, wherein, The method further comprises: if the first preset time is not reached and the water level in the waste water tank reaches the full water level, sending a third instruction to the electromagnetic valve, which instructs the electromagnetic valve to continue to open until the first preset time is reached.

6. The method of claim 3, wherein, After the drainage is completed, the method further comprises: sending a fourth instruction to the water pump, which instructs the water pump to pump the water in the clean water tank to the water tank, the water inlet pipe, the steam generator and the water vapor separator for self-cleaning; When the pumping completion condition is met, a fifth command is sent to the pump, instructing the pump to shut down; simultaneously, a sixth command is sent to the solenoid valve, instructing the solenoid valve to open for a second preset duration to discharge the cleaning water into the wastewater tank; wherein, the pumping completion condition is one of the following: condition one, the water level in the tank reaches the preset upper limit and pumping continues for a third preset duration after reaching the preset upper limit; condition two, the water level in the tank is between the preset lower limit and the preset upper limit, and the pumping time reaches a fourth preset duration; condition three, the water level in the tank never exceeds the preset lower limit and the pumping time reaches the fourth preset duration.

7. The method of claim 6, wherein, When the pumping completion condition is condition one or condition two, the method further includes the following steps before sending the sixth command to the solenoid valve: A seventh instruction is sent to the steam generator, which instructs the steam generator to start for a fifth preset duration in order to flush the pipes with hot water.

8. The method of claim 3, wherein, Prior to drainage, the method further includes: Acquire the temperature signal from the temperature sensor installed on the outer wall of the steam generator; The temperature signal is compared with a preset scaling temperature; If the temperature of the temperature sensor remains greater than or equal to the preset scaling temperature within the sixth preset time period, a corresponding descaling reminder command will be sent.

9. The method of claim 3, wherein, The method for determining the shutdown command after the steam function of the steam oven is activated includes: Get the last start time of the steam generator; Determine the time difference between the power-on time and the power-off command issuance time; If the time difference is greater than the preset time difference, then the shutdown command is determined to be the shutdown command after the steam oven has turned on the steam function.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, implements the steps of the method described in any one of claims 3-9.

Images