Steaming oven and control method
By introducing a steam generator and water tank into the steam oven, combined with a temperature sensing module and a controller, the precise control of the temperature of the steam box is achieved, solving the problem of unstable temperature of the existing steam oven and improving the cooking effect.
Patent Information
- Application Number
- CN202510096793.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-21
- Publication Date
- 2025-05-27
AI Technical Summary
When cooking in the existing steam ovens simultaneously, it is difficult to effectively control the temperature of the steam box, resulting in unstable temperature and affecting the cooking effect.
Design a steam oven, including a steam generator, water tank, temperature sensing module and controller, heat water into the steam box through the steam generator or directly inject the room temperature water to accurately control the temperature of the steam box.
It realizes precise control of the temperature of the steam box, improves the cooking efficiency, avoids burning food, and improves the uniformity and stability of the cooking effect.
Smart Images
Figure CN120036619A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of kitchen appliances, and in particular to a steam oven and a control method thereof. Background Art
[0002] A steam oven is a kitchen appliance that integrates steaming and baking functions. It can realize multiple cooking methods in the same device to meet users' needs for food cooking diversity.
[0003] The steam oven in the prior art usually includes a steam oven cavity as the main cooking space; the heating cavity at the rear is provided with a heating body and a circulating fan to ensure even heat distribution. There is a shelf on the inner wall of the cavity for placing baking trays, grills, steam boxes and other containers. Some steam ovens are equipped with steam generators to generate steam, but there are problems such as residual heat affecting water temperature. Some competing products add an insulation layer to the steam box to control the temperature of the steam box, but the effect is not good. These structures have certain defects in function and performance, prompting the industry to continuously explore technical solutions to improve steam ovens.
[0004] In existing steam oven technology, steam is usually injected into the steam box to achieve the steaming function when cooking simultaneously. However, this method has some problems. First, the steam box is in a high-temperature environment, and the internal temperature is likely to exceed the preset temperature, and there is a lack of effective cooling measures in a high-temperature environment. In order to reduce the impact of the surrounding temperature on the temperature inside the steam box, some competing products will add an insulation layer to the steam box, but this will lead to a complex structure and the insulation effect cannot be fully guaranteed.
[0005] In addition, the existing steam oven solution usually injects water into the steam box through a steam generator, but this solution has the following disadvantages: first, the water injected by the steam generator may be affected by the residual temperature, resulting in unstable injected water temperature, especially when the steam box needs to be cooled down, cold water cannot be injected in time; second, the water temperature to be injected into the steam box cannot be adjusted in real time to a large extent according to the change of cooking state. Therefore, the existing technology has certain limitations in controlling the temperature of the steam box during steaming and baking synchronous cooking, and cannot meet the user's higher requirements for cooking effects. Summary of the invention
[0006] The present invention solves one of the technical problems in the related art at least to a certain extent.
[0007] To this end, the present application aims to provide a steam oven and a control method, when the temperature in the steam box is low, water heated by a steam generator is injected into the steam box to increase the temperature in the steam box and improve the steaming efficiency. When the set temperature of the oven is much higher than the temperature of the steam box, if the temperature in the steam box is too high, the food inside will be burnt. At this time, water at room temperature in a water tank is injected into the steam box to reduce the temperature in the steam box and prevent the food from being burnt.
[0008] To achieve the above object, the present invention provides a steam oven, comprising: A box body, wherein a cooking cavity communicating with the outside is arranged inside the box body; A heating element, the heating element is used to heat the cooking cavity; A steaming box, the steaming box is used to be placed in the cooking cavity; A water tank, wherein the water tank is arranged on the box body; a first water pump, wherein the first water pump is disposed in the first pipeline; a steam generator, the steam generator being disposed in the first pipeline and communicating with the first pipeline; A second pipeline, two ends of which are respectively connected to and communicated with the water tank and the steam box; a second water pump, the second water pump being disposed in the second pipeline; A temperature sensing module, the temperature sensing module is used to detect the temperature in the cooking cavity and obtain the real-time baking temperature value; the temperature sensing module is used to detect the temperature in the steaming box and obtain the real-time cooking temperature value; A controller, wherein the controller is configured to: enter the first stage when the baking set temperature value minus the cooking set temperature value is greater than the preset temperature value; In the first phase: If the difference between the set temperature value for steaming and the preset temperature value for steaming is less than the real-time temperature for steaming and less than or equal to the set temperature value for steaming, the steam generator is started and the first water pump is started to inject water having a water temperature of the pre-injection temperature value into the steam box; If the set cooking temperature value is lower than the real-time cooking temperature value, the second water pump is started to directly inject the water in the water tank into the steam box.
[0009] In the technical solution, by setting structures such as a box, a heating element, a steam box, a water tank, a first pipeline, a steam generator, a second pipeline and a controller, multifunctional cooking of a steam oven is realized. The cooking cavity inside the box is connected to the outside world, which is convenient for putting in and taking out food; the heating element can heat the cooking cavity to meet the baking requirements; the steam box is used to place food for steaming; the water tank provides a water source for steaming; the first pipeline and the second pipeline are respectively connected to the water tank and the steam box, and cooperate with the steam generator to inject water or steam of different temperatures into the steam box according to the instructions of the controller to achieve precise steaming control. The controller judges to enter the first stage according to the difference between the set temperature values of baking and steaming, so that the device can flexibly switch the control strategy according to the temperature requirements of different cooking modes. In the first stage, according to the relationship between the real-time temperature of steaming and the set temperature, the steam generator and the water pump are accurately controlled to start, and water of suitable temperature is injected, which helps to accurately adjust the humidity and temperature in the cooking cavity and improve the uniformity and stability of the cooking effect. When the temperature in the steam box is low, water heated by the steam generator is injected into the steam box to increase the temperature in the steam box and improve the steaming efficiency. When the oven's set temperature is much higher than the steam box's temperature, if the temperature inside the steam box is too high, the food inside will be burnt. At this time, inject room temperature water from the water tank into the steam box to lower the temperature inside the steam box and prevent the food from being burnt.
[0010] In some embodiments of the present application, the controller is configured to: when the baking set temperature value minus the cooking set temperature value is less than or equal to the preset temperature value, enter the second stage; In the second stage, if the difference between the set temperature value of the steaming and boiling and the preset temperature is less than the real-time temperature value of the steaming and boiling, the steam generator is started and the first water pump is started to inject water with a temperature equal to the pre-injection temperature value into the steam box.
[0011] In the technical solution, when the baking temperature is close to the steaming temperature, if the current steam box temperature is higher than the required temperature, hot water heated by the evaporator is injected into the steam box to reduce the temperature slightly. Through precise temperature control, the steaming process is more stable, avoiding the poor taste of food caused by too high or too low temperature, further improving the cooking effect and food quality of the steam oven.
[0012] In some embodiments of the present application, the controller is configured as follows: in the first stage, if the real-time cooking temperature is less than or equal to the cooking set temperature value minus the preset temperature difference, no water injection is performed and the current state of operation is maintained.
[0013] In the technical solution, although the real-time temperature of steaming is low, the set temperature value of baking is high, and the temperature in the cooking cavity is high enough to heat the steam box. Therefore, no water is added and the current state is maintained. This strategy avoids unnecessary energy consumption and water injection, helps stabilize the temperature field in the cooking cavity, prevents a sudden drop in temperature due to excessive water injection, and ensures the stability of the cooking process.
[0014] In some embodiments of the present application, the controller is configured as follows: in the second stage, if the real-time cooking temperature value is less than or equal to the cooking set temperature value minus the preset temperature difference, water injection is not performed and the current state of operation is maintained.
[0015] In the technical solution, although the real-time temperature of steaming is low, the set temperature value of baking is high, and the temperature in the cooking cavity is high enough to heat the steam box. Therefore, no water is added and the current state is maintained. This strategy avoids unnecessary energy consumption and water injection, helps stabilize the temperature field in the cooking cavity, prevents a sudden drop in temperature due to excessive water injection, and ensures the stability of the cooking process.
[0016] In some embodiments of the present application, the pre-water injection temperature value is obtained in the following manner: when the baking set temperature value reaches the starting temperature value, each preset step temperature value corresponds to a pre-water injection temperature value.
[0017] In the technical solution, this step-by-step temperature control strategy can gradually adjust the pre-injection water temperature value according to the change of baking temperature, so that it is more in line with the cooking needs at different stages. For example, when the temperature in the steam box is high, lower temperature water can be injected, and when the temperature in the steam box is low, higher temperature water can be injected, thereby ensuring the temperature stability during the steaming process and improving the cooking effect and taste of the food.
[0018] Some embodiments of the present application include an inlet three-way valve, which connects the water tank, the first pipeline and the second pipeline respectively.
[0019] In the technical solution, an inlet three-way valve is provided to connect the water tank, the first pipeline and the second pipeline, thereby realizing flexible switching and distribution of water flow. When necessary, the controller can control the switch state of the inlet three-way valve as needed, so that the water in the water tank can flow into the first pipeline and the second pipeline separately or simultaneously, and then enter the steam box or steam generator. This design improves the flexibility and accuracy of water flow control, can meet the requirements of water volume and water temperature in different cooking modes, and improves the cooking effect and adaptability of the steam oven.
[0020] Some embodiments of the present application include an outlet three-way valve, which connects the first pipeline, the second pipeline and the steam box respectively.
[0021] In the technical solution, an outlet three-way valve is provided to connect the water tank, the first pipeline and the second pipeline, thereby realizing flexible switching and distribution of water flow. When necessary, the controller can control the switch state of the outlet three-way valve as needed, so that the water in the water tank can flow into the first pipeline and the second pipeline separately or simultaneously, and then enter the steam box or steam generator. This design improves the flexibility and accuracy of water flow control, can meet the requirements of water volume and water temperature in different cooking modes, and improves the cooking effect and adaptability of the steam oven.
[0022] In some embodiments of the present application, a first check valve is provided on the first pipeline; The second pipeline is provided with a second check valve.
[0023] In the technical solution, the check valves on the first pipeline and the second pipeline effectively prevent water from flowing back, avoiding equipment failures caused by reverse flow of water, such as steam generator damage, water pump idling, etc., and ensuring that water can only flow in one direction, preventing water from flowing back from the steam box or steam generator to the water tank or other pipelines when the water pump stops working or fails. This ensures the normal operation of the entire water system and extends the service life of the equipment.
[0024] In addition, the present application also provides a control method for a steam oven, characterized in that the steam oven comprises: A box body, wherein a cooking cavity communicating with the outside is arranged inside the box body; A heating element, the heating element is used to heat the cooking cavity; A steaming box, the steaming box is used to be placed in the cooking cavity; A water tank, wherein the water tank is arranged on the box body; a first water pump, wherein the first water pump is disposed in the first pipeline; a steam generator, the steam generator being disposed in the first pipeline and communicating with the first pipeline; A second pipeline, two ends of which are respectively connected to and communicated with the water tank and the steam box; a second water pump, the second water pump being disposed in the second pipeline; A temperature sensing module, the temperature sensing module is used to detect the temperature in the cooking cavity and obtain the real-time baking temperature value; the temperature sensing module is used to detect the temperature in the steaming box and obtain the real-time cooking temperature value; The control method comprises: When the baking set temperature value minus the steaming set temperature value is greater than the preset temperature value, the first stage is entered; In the first phase: If the difference between the set temperature value for steaming and the preset temperature value for steaming is less than the real-time temperature for steaming and less than or equal to the set temperature value for steaming, the steam generator is started and the first water pump is started to inject water having a water temperature of the pre-injection temperature value into the steam box; If the set steaming temperature value is lower than the real-time steaming temperature value, the second water pump is started to directly inject the water in the water tank into the steam box; If the real-time cooking temperature is less than or equal to the cooking set temperature value minus the preset temperature difference, no water injection is performed and the current state is maintained.
[0025] In the technical solution, by setting structures such as a box, a heating element, a steam box, a water tank, a first pipeline, a steam generator, a second pipeline and a controller, multifunctional cooking of a steam oven is realized. The cooking cavity inside the box is connected to the outside world, which is convenient for putting in and taking out food; the heating element can heat the cooking cavity to meet the baking requirements; the steam box is used to place food for steaming; the water tank provides a water source for steaming; the first pipeline and the second pipeline are respectively connected to the water tank and the steam box, and cooperate with the steam generator to inject water or steam of different temperatures into the steam box according to the instructions of the controller to achieve precise steaming control. The controller judges to enter the first stage according to the difference between the set temperature values of baking and steaming, so that the device can flexibly switch the control strategy according to the temperature requirements of different cooking modes. In the first stage, according to the relationship between the real-time temperature of steaming and the set temperature, the steam generator and the water pump are accurately controlled to start, and water of suitable temperature is injected, which helps to accurately adjust the humidity and temperature in the cooking cavity and improve the uniformity and stability of the cooking effect. When the temperature in the steam box is low, water heated by the steam generator is injected into the steam box to increase the temperature in the steam box and improve the steaming efficiency. When the oven's set temperature is much higher than the steam box's temperature, if the temperature inside the steam box is too high, the food inside will be burnt. At this time, inject room temperature water from the water tank into the steam box to lower the temperature inside the steam box and prevent the food from being burnt.
[0026] In some embodiments of the present application, when the baking setting temperature value minus the cooking setting temperature value is less than or equal to the preset temperature value, the second stage is entered; In the second stage, if the difference between the set temperature value of the steaming and the preset temperature is less than the real-time temperature value of the steaming, the steam generator is started and the first water pump is started to inject water with a temperature of the pre-injection temperature value into the steam box; If the real-time cooking temperature is less than or equal to the set cooking temperature minus the preset temperature difference, no water injection is performed and the current state is maintained.
[0027] In the technical solution, when the baking temperature is close to the steaming temperature, if the current steam box temperature is higher than the required temperature, hot water heated by the evaporator is injected into the steam box to reduce the temperature slightly. Through precise temperature control, the steaming process is more stable, avoiding the poor taste of food caused by too high or too low temperature, further improving the cooking effect and food quality of the steam oven.
[0028] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] Figure 1 is a schematic diagram of the overall structure of a steam oven according to an embodiment of the present application; Figure 2 is a schematic diagram of the internal structure of a steam oven according to an embodiment of the present application; Figure 3 is a schematic diagram of the internal structure of a steam oven according to an embodiment of the present application; Figure 4 is a rear view of the internal structure of the steam oven according to an embodiment of the present application; Figure 5 is a schematic diagram of the operation of the water tank portion of the steam oven according to an embodiment of the present application; Figure 6 is a working flow chart of a steam oven according to an embodiment of the present application; Figure 7 is a working flow chart of a steam oven according to an embodiment of the present application; Figure 8 is a working flow chart of a steam oven according to an embodiment of the present application; Fig. 9 is a working flow chart of a steam oven according to an embodiment of the present application; Fig.10 It is a working flow chart of the steam oven according to the implementation mode of the present application.
[0030] In the above figures: 100, shell; 200, steam box; 300, water tank; 400, first pipeline; 500, steam generator; 600, first water pump; 700, second pipeline; 800, second water pump. DETAILED DESCRIPTION
[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention. In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature. In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.
[0032] The present invention is described in detail below by way of exemplary embodiments. However, it should be understood that elements, structures, and features in one embodiment may also be beneficially combined in other embodiments without further description. In the present application, the steam oven includes a box body, a cooking cavity and a heating element are arranged inside the box body, and the heating element heats the cooking cavity, thereby realizing cooking of the food in the cooking cavity. A steam box is also arranged in the cooking cavity. A steam generator is also arranged in the box body, and water or steam is injected into the steam box through the steam generator, thereby realizing cooking of the food in the steam box.
[0033] Hereinafter, embodiments of the present application will be described in detail with reference to the accompanying drawings. Referring to all the accompanying drawings, in an illustrative embodiment of the steam oven of the present invention, the steam oven comprises: The steam oven comprises a box body, and a cooking cavity connected to the outside is arranged inside the box body. The box body is the overall frame of the steam oven, and the cooking cavity is arranged inside, which provides a special space for multiple cooking functions such as steaming and baking. The design of the cooking cavity can better control the cooking environment, such as temperature, humidity, etc.
[0034] In some embodiments, the steam oven further includes a heating element, which is used to heat the cooking cavity. The heating element can accurately control the temperature of the cooking cavity to meet the cooking temperature requirements of different ingredients.
[0035] In some embodiments, the steam oven further includes a steam box 200, which is used to be placed in the cooking cavity. The steam box 200 can be used to steam ingredients, which complements the baking function of the steam oven. Users can achieve steaming, baking, and steaming and baking combination cooking in the same device, such as making steamed fish, steamed vegetables, or steaming first and then baking, etc., to enrich the dish styles and meet different taste requirements.
[0036] In some embodiments, the steam oven further includes a water tank 300, which is arranged in the box body. The water tank 300 is used to hold water, and the water source can be added by the user himself, or the steam oven can be connected to the water source through a water pipe and automatically filled with water according to demand. The steam oven further includes a first pipeline 400, and the two ends of the first pipeline 400 are respectively connected and communicated with the water tank 300 and the steam box 200. The water in the water tank 300 can flow to the steam box 200 more directly and efficiently, providing a stable water source for the steam box 200, and ensuring that steam is continuously generated during the steaming process. When cooking, it is ensured that there is always sufficient steam in the steam box 200, and the food is heated more evenly, which improves the cooking effect, such as steaming seafood to be quickly cooked and tender and juicy. In addition, the independent pipeline reduces the residual water in other components, which is conducive to keeping the interior of the steam oven dry, reducing the risk of equipment damage, and extending the service life.
[0037] In some embodiments, the steam oven further includes a first water pump 600 , which is disposed in the first pipeline 400 ; the first water pump 600 transports water in the water tank 300 to the steam box 200 through the first pipeline 400 .
[0038] In some embodiments, the steam oven further includes a steam generator 500, which is disposed in the first pipeline 400 and communicated with the first pipeline 400. The water in the pipeline can be efficiently heated and quickly converted into high-temperature steam, which greatly improves the efficiency and speed of steam generation and shortens the cooking preheating time. The generated high-temperature steam quickly reaches the steam box 200 through the first pipeline 400, so that the food is quickly surrounded by steam and evenly heated, and the cooked food tastes better and retains more complete nutrition. In addition, the design integrated in the pipeline saves internal space, optimizes the internal structure layout of the steam oven, and improves the overall performance. In addition, the steam box 200 can also heat water to achieve the function of inputting hot water into the steam box 200.
[0039] In some embodiments, the steam oven further includes a second pipeline 700, the two ends of which are respectively connected to and communicated with the water tank 300 and the steam box 200, and the normal temperature water in the water tank 300 can be directly injected into the steam box 200 through the second pipeline 700. Baking is performed in the cooking cavity, and steaming is performed in the steam box 200. Because the steam box 200 is arranged in the cooking cavity, when steaming and baking are performed at the same time, if the temperature of the oven is too high, the temperature in the steam box 200 will also be too high. At this time, injecting normal temperature water into the steam box 200 through the second pipeline 700 can reduce the temperature in the steam box 200 and prevent the food in the steam box 200 from being burnt or over-cooked.
[0040] In some embodiments, the steam oven further includes a second water pump 800 , which is disposed in the second pipeline 700 ; the water in the water tank 300 is transported to the steam box 200 through the second pipeline 700 by the second water pump 800 .
[0041] In some embodiments, the cooking cavity is used for baking food. The temperature of the cooking cavity set by the user is the baking set temperature value. The steam box 200 is used for cooking food, and the temperature set by the user in the cooking box is the cooking set temperature value. The temperature of the water output by the steam generator 500 is the steam outlet water temperature value. The highest temperature at which the steam generator 500 can be filled with water is the maximum steam outlet water temperature value, wherein the maximum steam outlet water temperature value is less than or equal to the cooking set temperature value.
[0042] In some embodiments, the oven includes a temperature sensing module, which is used to detect the temperature in the cooking cavity and obtain the real-time temperature value of baking. In addition, the temperature sensing module is also used to detect the temperature in the steam box 200 and obtain the real-time temperature value of steaming.
[0043] In some embodiments, the steam oven further includes a controller, and the controller is configured to: when the baking set temperature value minus the steaming set temperature value is greater than the preset temperature value, enter the first stage. In the first stage: if the difference between the steaming set temperature value minus the preset temperature value is less than the steaming real-time temperature and less than or equal to the steaming set temperature value, start the steam generator 500 and start the first water pump 600 to inject water with a water temperature of the pre-injection temperature value into the steam box 200. If the steaming set temperature value is less than the steaming real-time temperature value, start the second water pump 800 to directly inject the water in the water tank 300 into the steam box 200.
[0044] Through the above scheme, by setting up the structure of the box, heating element, steam box 200, water tank 300, first pipeline 400, steam generator 500, second pipeline 700 and controller, the multifunctional cooking of the steam oven is realized. The cooking cavity inside the box is connected with the outside, which is convenient for putting in and taking out the food; the heating element can heat the cooking cavity to meet the baking requirements; the steam box 200 is used to place the food for steaming; the water tank 300 provides water for steaming; the first pipeline 400 and the second pipeline 700 are respectively connected to the water tank 300 and the steam box 200, and cooperate with the steam generator 500 to inject water or steam of different temperatures into the steam box 200 according to the instructions of the controller to achieve precise steaming control. The controller judges to enter the first stage according to the difference between the set temperature values of baking and steaming, so that the device can flexibly switch the control strategy according to the temperature requirements of different cooking modes. In the first stage, according to the relationship between the real-time temperature of steaming and the set temperature, the steam generator 500 and the water pump are accurately controlled to start, and water at a suitable temperature is injected, which helps to accurately adjust the humidity and temperature in the cooking cavity and improve the uniformity and stability of the cooking effect. When the temperature in the steam box 200 is low, water heated by the steam generator 500 is injected into the steam box 200 to increase the temperature in the steam box 200 and improve the cooking efficiency. When the set temperature of the oven is much higher than the temperature of the steam box 200, if the temperature in the steam box 200 is too high, it will cause the internal food to burn. At this time, the normal temperature water in the water tank 300 is injected into the steam box 200 to reduce the temperature in the steam box 200 and prevent the food from burning.
[0045] In some embodiments, the temperature sensing module includes a cooking temperature sensor, which can be disposed in the cooking cavity or in the steaming box 200, and is used to detect the real-time temperature in the steaming box 200 and output the real-time cooking temperature to the controller.
[0046] In some embodiments, the temperature sensing module includes a baking temperature sensor, which can be disposed in the cooking cavity and is used to detect the real-time temperature in the cooking cavity and output the real-time baking temperature to the controller.
[0047] In some embodiments, the controller is configured as follows: in the first stage, if the real-time cooking temperature is less than or equal to the cooking set temperature value minus the preset temperature difference value, no water injection is performed and the current state operation is maintained.
[0048] Although the real-time temperature of steaming is low, the set temperature value of baking is high, and the temperature in the cooking cavity is high enough to heat the steam box 200. Therefore, no water is added and the current state is maintained. This strategy avoids unnecessary energy consumption and water injection, helps stabilize the temperature field in the cooking cavity, prevents a sudden drop in temperature due to excessive water injection, and ensures the stability of the cooking process.
[0049] In some embodiments, the controller is configured to: when the baking set temperature value minus the steaming set temperature value is less than or equal to the preset temperature value, enter the second stage. In the second stage, if the difference between the steaming set temperature value minus the preset temperature value is less than the steaming real-time temperature value, the steam generator 500 is started and the first water pump 600 is started to inject water with a temperature of the pre-injection temperature value into the steam box 200.
[0050] When the baking temperature is close to the steaming temperature, if the current temperature of the steam box 200 is greater than the required temperature, hot water heated by the evaporator is injected into the steam box 200 to reduce the temperature slightly. Through precise temperature control, the steaming process is more stable, avoiding the poor taste of food caused by too high or too low temperature, and further improving the cooking effect and food quality of the steam oven.
[0051] In some embodiments, the controller is configured as follows: in the second stage, if the real-time cooking temperature value is less than or equal to the cooking set temperature value minus the preset temperature difference, no water injection is performed and the current state is maintained. Although the real-time cooking temperature is low, the baking set temperature value is high, and the temperature in the cooking cavity is high enough to heat the steam box 200. Therefore, no water is added and the current state is maintained. This strategy avoids unnecessary energy consumption and water injection, helps stabilize the temperature field in the cooking cavity, prevents a sudden drop in temperature due to excessive water injection, and ensures the stability of the cooking process.
[0052] In some embodiments, the pre-water injection temperature value is obtained in such a way that, when the baking set temperature value reaches the starting temperature value, each preset step temperature value corresponds to a pre-water injection temperature value. This step-by-step temperature control strategy can gradually adjust the pre-water injection temperature value according to the change of the baking temperature, so that it better meets the cooking requirements at different stages. For example, when the temperature in the steam box 200 is high, water with a lower temperature can be injected, and when the temperature in the steam box 200 is low, water with a higher temperature can be injected, thereby ensuring the temperature stability during the steaming process and improving the cooking effect and taste of the food.
[0053] In some embodiments, the starting temperature value and the preset step temperature value can be in various forms such as factory preset, cloud-sent, and customer set.
[0054] In some embodiments, the starting temperature value is 50° C. The preset step temperature value is 10° C.
[0055] In some embodiments, an inlet three-way valve is included, which connects the water tank 300, the first pipeline 400 and the second pipeline 700 respectively. The inlet three-way valve is set to connect the water tank 300, the first pipeline 400 and the second pipeline 700, so as to realize flexible switching and distribution of water flow. When necessary, the controller can control the switch state of the inlet three-way valve as needed, so that the water in the water tank 300 can flow into the first pipeline 400 and the second pipeline 700 separately or simultaneously, and then enter the steam box 200 or the steam generator 500. This design improves the flexibility and accuracy of water flow control, can meet the requirements of water volume and water temperature in different cooking modes, and improves the cooking effect and adaptability of the steam oven.
[0056] In some embodiments, the controller is configured to, in the first stage, if the difference between the set temperature value of the steaming cooking and the preset temperature is less than the real-time temperature of the steaming cooking and is less than or equal to the set temperature value of the steaming cooking, then control the inlet three-way valve to open the connection between the water tank 300 and the first pipeline 400, and close the connection between the water tank 300 and the second pipeline 700. In the second stage, if the difference between the set temperature value of the steaming cooking and the preset temperature is less than the real-time temperature value of the steaming cooking, then control the outlet three-way valve to open the connection between the water tank 300 and the first pipeline 400, and close the connection between the water tank 300 and the second pipeline 700. By precisely controlling the inlet three-way valve, only the water tank 300 and the first pipeline 400 are connected, and the water is converted into steam through the steam generator 500, ensuring a stable supply of steam in the cavity, maintaining a high-temperature cooking environment, and ensuring that the food is quickly cooked. At the same time, the water tank 300 and the second pipeline 700 are closed to prevent the injection of normal temperature water from affecting the temperature and steam environment in the water tank 300, ensuring a stable cooking effect, laying a good foundation for the subsequent cooking stage, and realizing an efficient and accurate cooking process.
[0057] In some embodiments, the controller is configured to, in the first stage, if the steaming set temperature value is less than the steaming real-time temperature value, control the inlet three-way valve to open the connection between the water tank 300 and the second pipeline 700, and close the connection between the water tank 300 and the first pipeline 400. This configuration of the controller is of great significance. When the steaming real-time temperature is higher than the set value, the water tank 300 is opened to communicate with the second pipeline 700, and normal temperature water is injected, which can quickly absorb the excess heat in the steam box 200, reduce the temperature, and avoid overcooking of food due to overheating. At the same time, the water tank 300 and the first pipeline 400 are closed to prevent the generation of more steam to aggravate the temperature rise, ensure that the temperature in the cavity is stable in an appropriate range, accurately control the cooking temperature, make the food cooked thoroughly without excessive loss of nutrition and taste, and greatly improve the accuracy and success rate of cooking.
[0058] In some embodiments, an outlet three-way valve is included, which connects the first pipeline 400, the second pipeline 700 and the steam box 200 respectively. The outlet three-way valve is set to connect the water tank 300, the first pipeline 400 and the second pipeline 700, so as to realize flexible switching and distribution of water flow. When necessary, the controller can control the switch state of the outlet three-way valve as needed, so that the water in the water tank 300 can flow into the first pipeline 400 and the second pipeline 700 separately or simultaneously, and then enter the steam box 200 or the steam generator 500. This design improves the flexibility and accuracy of water flow control, can meet the requirements of water volume and water temperature in different cooking modes, and improves the cooking effect and adaptability of the steam oven.
[0059] In some embodiments, the controller is configured to, in the first stage, if the difference between the steaming set temperature value and the preset temperature is less than the steaming real-time temperature and less than or equal to the steaming set temperature value, control the outlet three-way valve to open the connection between the steam box 200 and the first pipeline 400, and close the connection between the steam box 200 and the second pipeline 700. In the second stage, if the difference between the steaming set temperature value and the preset temperature is less than the steaming real-time temperature value, control the outlet three-way valve to open the connection between the steam box 200 and the first pipeline 400, and close the connection between the steam box 200 and the second pipeline 700. By controlling the outlet three-way valve to connect the steam box 200 with the first pipeline 400, the steam in the steam box 200 can be efficiently guided back to the steam generator 500 to participate in the circulation, so as to fully utilize the heat, save energy and maintain a stable high-temperature steaming environment. At the same time, the steam box 200 and the second pipeline 700 are sealed to prevent unnecessary substances such as condensed water from entering through the second pipeline 700, avoid interfering with the normal steam circulation, ensure the continuity and stability of the steaming process, and improve the cooking effect and efficiency.
[0060] In some embodiments, the controller is configured to, in the first stage, if the steaming set temperature value is less than the steaming real-time temperature value, control the outlet three-way valve to open the connection between the steam box 200 and the second pipeline 700, and close the connection between the steam box 200 and the first pipeline 400. This configuration of the controller is of great significance. When the real-time temperature is higher than the set value, the steam box 200 is opened to connect with the second pipeline 700, and the excess heat can be quickly discharged through normal temperature water, and the temperature in the steam box 200 can be accurately controlled to avoid excessive heating of the food. The steam box 200 and the first pipeline 400 are closed to prevent high-temperature steam from continuing to enter and prevent the temperature from getting out of control further. This precise operation can not only ensure that the food is not overcooked and retain the taste and nutrition to the greatest extent, but also maintain the stable operation of the equipment, extend the service life, and significantly improve the accuracy and reliability of cooking.
[0061] In some embodiments, the specific values of the preset temperature value and the preset temperature difference value can be factory preset, cloud-delivered, customer-set, etc. The preset temperature difference value builds a flexible temperature adjustment range, effectively avoiding the problem of repeated water injection in a short period of time due to slight fluctuations in temperature near the set value, ensuring more stable and efficient operation of the equipment.
[0062] In some embodiments, the preset temperature value is 20°C.
[0063] In some embodiments, the determination that the baking set temperature value minus the steaming set temperature value is greater than the preset temperature value, and the determination that the baking set temperature value minus the steaming set temperature value is less than or equal to the preset temperature value is performed in real time. Real-time determination of the relationship between the difference between the baking set temperature value and the steaming set temperature value and the preset temperature value can provide a basis for the precise temperature control of the steam box 200, ensure that the cooking or industrial processing process is carried out according to the set curve, and improve quality stability.
[0064] In another embodiment, it is determined at preset intervals whether to perform a water injection operation. During the water injection operation, it is determined that the baking set temperature value minus the steaming set temperature value is greater than the preset temperature value, and it is determined that the baking set temperature value minus the steaming set temperature value is less than or equal to the preset temperature value. On the one hand, the temperature of the steam box 200 is precisely regulated to ensure a stable cooking environment, so that the food is heated evenly and has a better taste quality. On the other hand, unnecessary detection operations are reduced, frequent starts and stops due to slight temperature fluctuations are avoided, energy consumption is reduced, energy-saving operation is achieved, and the endurance and use cost of the equipment are extended. At the same time, the system computing burden and component working frequency are reduced, the risk of failure is reduced, the service life of the equipment is extended, reliability is enhanced, user maintenance costs and use concerns are reduced, and the comprehensive performance of the steam oven is improved.
[0065] In some embodiments, a flow meter is provided on the first pipeline 400, and water of a corresponding flow rate can be added to the steam box 200 according to the real-time temperature of the steam box 200, time, or a preset plan.
[0066] In some embodiments, a flow meter is provided on the second pipeline 700, and water of a corresponding flow rate can be added to the steam box 200 according to the real-time temperature of the steam box 200, time, or a preset plan.
[0067] In some embodiments, each corresponding steam box 200 set temperature value or baking set temperature value corresponds to a pre-water injection time and a stable water injection cycle time. The pre-water injection time is the duration of water injection when the program starts, and lasts until the temperature of the steam box 200 is stable. The stable water injection cycle time is Msx seconds of water injection every Y seconds.
[0068] In some embodiments, a first check valve is disposed on the first pipeline 400 , and the first check valve is used to prevent water or steam in the steam box 200 from flowing back to the water tank 300 through the first pipeline 400 .
[0069] In some embodiments, a second check valve is disposed on the second pipeline 700 , and the second check valve is used to prevent the water or steam in the steam box 200 from flowing back to the water tank 300 through the second pipeline 700 .
[0070] Through the above solution, the check valves on the first pipeline 400 and the second pipeline 700 effectively prevent water from flowing backwards, thus avoiding equipment failures caused by water flowing backwards, such as damage to the steam generator 500 and idling of the water pump. In addition, it ensures that water can only flow in one direction, thus preventing water from flowing back from the steam box 200 or the steam generator 500 to the water tank 300 or other pipelines when the water pump stops working or fails. This ensures the normal operation of the entire water system and extends the service life of the equipment.
[0071] In some embodiments, a heating cavity is further provided in the shell 100, a heating element is provided in the heating cavity, a channel is provided between the heating cavity and the cooking cavity, and the heat in the heating cavity is transported to the cooking cavity through the channel.
[0072] In some embodiments, a fan is disposed in the heating cavity, and the heat output by the heating element is transported to the cooking cavity through air by the fan.
[0073] In some embodiments, the heating cavity is located on one side of the cooking cavity in the horizontal direction. When a baking tray is placed, the steam box 200 is located below the baking tray. If the heating cavity is located above the cooking cavity, the baking tray will block the heat transmitted by the heating cavity, so that the steam box 200 below cannot be heated well. In the present application, the heating cavity is located on one side of the cooking cavity in the horizontal direction. Such a layout design cleverly avoids the obstruction of the baking tray to heat transfer. Heat can be radiated relatively smoothly from the side to the area where the steam box 200 is located, ensuring that the steam box 200 can obtain sufficient and stable heat supply during the cooking process. Whether in the mode of single steaming or simultaneous steaming and baking, the heating efficiency of the ingredients in the steam box 200 can be effectively improved, making the cooking effect more uniform, greatly reducing the phenomenon of partial undercooking or overcooking of ingredients due to uneven heat distribution, and significantly improving the user's cooking experience and food quality.
[0074] In some embodiments, the controller is configured to: in the first stage, if the steaming set temperature value is less than the steaming real-time temperature value, then reduce the preset interval time of the baking set temperature value, thereby reducing the heating effect in the steam box 200. This avoids excessive steaming or burning of food due to excessive temperature in the steam box 200, and can also accurately control the temperature distribution in the cooking cavity to ensure that the food is cooked at an appropriate temperature, improve the uniformity of the cooking effect and the quality of the food, while reducing energy waste and enhancing the intelligence and adaptability of the steam oven.
[0075] In some embodiments, the steam box 200 is made of metal to improve the heat conduction effect. The high temperature in the cooking cavity can heat the steam box 200.
[0076] In some embodiments, the controller can be connected to the cloud, smart home or mobile device via WiFi, Bluetooth or the Internet. The user can adjust the starting temperature value, the preset step temperature value, the preset temperature value and the preset temperature difference value according to the needs. And the user can directly control whether to start the second water pump 800 to directly inject the water in the water tank 300 into the steam box 200.
[0077] In some embodiments, a steam condensation recovery device is provided in the cooking cavity, which collects the steam generated during the cooking process and condenses it into water. The condensed water is directly transported to the water tank 300, thereby improving the utilization rate of water resources. When the user forgets to refill the water, the cooking pot can still be used for a long time, thereby improving the user experience.
[0078] In some embodiments, the controller is configured to: when the first water pump 600 or the second water pump 800 needs to be turned on, the flow meter detects that there is no water flow in the corresponding first pipeline 400 or the second pipeline 700, and then an alarm is issued. The alarm can be a sound reminder, a light reminder, or an alarm sent to the user's mobile device for reminder.
[0079] In some embodiments, a liquid level sensor is provided in the water tank 300. The controller is configured to: when the first water pump 600 or the second water pump 800 needs to be turned on, if the liquid level meter detects that the water level in the water tank 300 is lower than the set water level, an alarm is issued. The alarm can be a sound reminder, a light reminder, or an alarm sent to the user's mobile device for reminder.
[0080] In some embodiments, the controller has a memory function, and for the same food and the corresponding baking setting temperature and the corresponding steaming setting temperature, the same water injection mode as the last time can be automatically adopted. In the water injection mode, it is judged whether the baking setting temperature value minus the steaming setting temperature value is greater than the preset temperature value. Or, it is judged whether the baking setting temperature value minus the steaming setting temperature value is less than or equal to the preset temperature value. And enter the corresponding first stage or second stage.
[0081] In some embodiments, a recognition system is provided in the cooking cavity, and the recognition system automatically recognizes the ingredients put in and sets the water injection mode according to the memory function.
[0082] In some embodiments, the recognition system can be a camera, laser scanning, infrared scanning, etc., and can be used in conjunction with a database or AI algorithm to determine the ingredients.
[0083] Please refer to all the drawings. In addition, the present application also provides a control method for a steam oven. The structure of the steam oven is the same as the above content. The control method includes: When the baking set temperature value minus the steaming set temperature value is greater than the preset temperature value, the first stage is entered; In the first phase: If the difference between the set temperature value of the steaming and the preset temperature is less than the real-time temperature of the steaming and is less than or equal to the set temperature value of the steaming, the steam generator 500 is started and the first water pump 600 is started to inject water having a water temperature of the pre-injection temperature value into the steam box 200; If the set cooking temperature value is lower than the real-time cooking temperature value, the second water pump 800 is started to directly inject the water in the water tank 300 into the steam box 200; If the real-time cooking temperature is less than or equal to the cooking set temperature value minus the preset temperature difference, no water injection is performed and the current state is maintained.
[0084] The difference between this solution and the above is that the control method of the steam oven is not limited to being configured in the controller. The control method can be sent through any form such as a USB flash drive, cloud download, Bluetooth, network data, etc.
[0085] Through the above scheme, by setting up the structure of the box, heating element, steam box 200, water tank 300, first pipeline 400, steam generator 500, second pipeline 700 and controller, the multifunctional cooking of the steam oven is realized. The cooking cavity inside the box is connected with the outside, which is convenient for putting in and taking out the food; the heating element can heat the cooking cavity to meet the baking requirements; the steam box 200 is used to place the food for steaming; the water tank 300 provides water for steaming; the first pipeline 400 and the second pipeline 700 are respectively connected to the water tank 300 and the steam box 200, and cooperate with the steam generator 500 to inject water or steam of different temperatures into the steam box 200 according to the instructions of the controller to achieve precise steaming control. The controller judges to enter the first stage according to the difference between the set temperature values of baking and steaming, so that the device can flexibly switch the control strategy according to the temperature requirements of different cooking modes. In the first stage, according to the relationship between the real-time temperature of steaming and the set temperature, the steam generator 500 and the water pump are accurately controlled to start, and water at a suitable temperature is injected, which helps to accurately adjust the humidity and temperature in the cooking cavity and improve the uniformity and stability of the cooking effect. When the temperature in the steam box 200 is low, water heated by the steam generator 500 is injected into the steam box 200 to increase the temperature in the steam box 200 and improve the cooking efficiency. When the set temperature of the oven is much higher than the temperature of the steam box 200, if the temperature in the steam box 200 is too high, it will cause the internal food to burn. At this time, the normal temperature water in the water tank 300 is injected into the steam box 200 to reduce the temperature in the steam box 200 and prevent the food from burning.
[0086] In some embodiments, when the baking setting temperature value minus the cooking setting temperature value is less than or equal to the preset temperature value, the second stage is entered; In the second stage, if the difference between the set temperature value of the steaming and the preset temperature is less than the real-time temperature value of the steaming, the steam generator 500 is started and the first water pump 600 is started to inject water having a temperature equal to the pre-injection temperature into the steam box 200; If the real-time cooking temperature is less than or equal to the set cooking temperature minus the preset temperature difference, no water injection is performed and the current state is maintained.
[0087] Through the above solution, when the baking temperature is close to the steaming temperature, if the current temperature value of the steam box 200 is greater than the required temperature, hot water heated by the evaporator is injected into the steam box 200 to reduce the temperature slightly. Through precise temperature control, the steaming process is more stable, avoiding the poor taste of food caused by too high or too low temperature, and further improving the cooking effect and food quality of the steam oven.
[0088] In some embodiments, except that the preset temperature difference does not need to be considered when judging the logic, the above scheme is the same as the above content of this article.
[0089] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.
Claims
1. A steam oven, characterized in that: It includes: A box body, wherein a cooking cavity communicating with the outside is arranged inside the box body; A heating element, the heating element is used to heat the cooking cavity; A steaming box, the steaming box is used to be placed in the cooking cavity; A water tank, wherein the water tank is arranged on the box body; A first pipeline, two ends of which are respectively connected to and communicated with the water tank and the steam box; a first water pump, wherein the first water pump is disposed in the first pipeline; a steam generator, the steam generator being disposed in the first pipeline and communicating with the first pipeline; A second pipeline, two ends of which are respectively connected to and communicated with the water tank and the steam box; a second water pump, the second water pump being disposed in the second pipeline; A temperature sensing module, the temperature sensing module is used to detect the temperature in the cooking cavity and obtain the real-time baking temperature value; the temperature sensing module is used to detect the temperature in the steaming box and obtain the real-time cooking temperature value; A controller, wherein the controller is configured to: enter the first stage when the baking set temperature value minus the cooking set temperature value is greater than the preset temperature value; In the first phase: If the difference between the set temperature value for steaming and the preset temperature value for steaming is less than the real-time temperature for steaming and less than or equal to the set temperature value for steaming, the steam generator is started and the first water pump is started to inject water having a water temperature of the pre-injection temperature value into the steam box; If the set cooking temperature value is less than the real-time cooking temperature value, the second water pump is started to directly inject the water in the water tank into the steam box.
2. The steam oven according to claim 1, characterized in that: The controller is configured to: enter the second stage when the baking set temperature value minus the cooking set temperature value is less than or equal to the preset temperature value; In the second stage, if the difference between the set temperature value of the steaming and boiling and the preset temperature is less than the real-time temperature value of the steaming and boiling, the steam generator is started and the first water pump is started to inject water with a temperature equal to the pre-injection temperature value into the steam box.
3. The steam oven according to claim 2, characterized in that: The controller is configured as follows: in the first stage, if the real-time cooking temperature is less than or equal to the cooking set temperature value minus the preset temperature difference value, no water injection is performed and the current state operation is maintained.
4. The steam oven according to claim 3, characterized in that: The controller is configured to: in the second stage, if the real-time cooking temperature value is less than or equal to the cooking set temperature value minus the preset temperature difference value, no water injection is performed and the current state is maintained.
5. The steam oven according to claim 4, characterized in that: The pre-water injection temperature value is obtained in the following manner: when the baking set temperature value reaches the starting temperature value, each interval of the preset step temperature value corresponds to a pre-water injection temperature value.
6. The steam oven according to any one of claims 1 to 5, characterized in that: An inlet three-way valve is included, which connects the water tank, the first pipeline and the second pipeline respectively.
7. The steam oven according to any one of claims 1 to 5, characterized in that: An outlet three-way valve is included, which connects the first pipeline, the second pipeline and the steam box respectively.
8. The steam oven according to any one of claims 1 to 5, characterized in that: A first check valve is provided on the first pipeline, which is used to prevent the water or steam in the steam box from flowing back to the water tank through the first pipeline; The second pipeline is provided with a second check valve, which is used to prevent the water or steam in the steam box from flowing back to the water tank through the second pipeline.
9. A method for controlling a steam oven, characterized in that: The steam oven comprises: A box body, wherein a cooking cavity communicating with the outside is arranged inside the box body; A heating element, the heating element is used to heat the cooking cavity; A steaming box, the steaming box is used to be placed in the cooking cavity; A water tank, wherein the water tank is arranged on the box body; a first water pump, wherein the first water pump is disposed in the first pipeline; a steam generator, the steam generator being disposed in the first pipeline and communicating with the first pipeline; A second pipeline, two ends of which are respectively connected to and communicated with the water tank and the steam box; a second water pump, the second water pump being disposed in the second pipeline; A temperature sensing module, the temperature sensing module is used to detect the temperature in the cooking cavity and obtain the real-time baking temperature value; the temperature sensing module is used to detect the temperature in the steaming box and obtain the real-time cooking temperature value; The control method comprises: When the baking set temperature value minus the steaming set temperature value is greater than the preset temperature value, the first stage is entered; In the first phase: If the difference between the set temperature value for steaming and the preset temperature value for steaming is less than the real-time temperature for steaming and less than or equal to the set temperature value for steaming, the steam generator is started and the first water pump is started to inject water having a water temperature of the pre-injection temperature value into the steam box; If the set steaming temperature value is lower than the real-time steaming temperature value, the second water pump is started to directly inject the water in the water tank into the steam box; If the real-time cooking temperature is less than or equal to the cooking set temperature value minus the preset temperature difference, no water injection is performed and the current state is maintained.
10. The control method of the steam oven according to claim 9, characterized in that: When the baking set temperature value minus the steaming set temperature value is less than or equal to the preset temperature value, the second stage is entered; In the second stage, if the difference between the set temperature value of the steaming and the preset temperature is less than the real-time temperature value of the steaming, the steam generator is started and the first water pump is started to inject water with a temperature of the pre-injection temperature value into the steam box; If the real-time cooking temperature is less than or equal to the set cooking temperature minus the preset temperature difference, no water injection is performed and the current state is maintained.