Steam cooking device and steam cooking system

Abstract

The utility model discloses a steam cooking device and a steam cooking system. The steam cooking device comprises an inner container, a heating device and a heating device, the panel is used for a user to control the steam cooking device; the steam generator is used for providing steam into the inner container; a first function key, wherein the first function key is arranged on the panel; the controller is in electric connection and / or communication connection with the steam generator and the first function key, the steam cooking device at least has a first cooking mode, the controller stores the target steam temperature in the inner container in the first cooking mode, and the target steam temperature ranges from 50 DEG C to 97 DEG C; when the first function key is triggered, the steam cooking device enters the first cooking mode. According to the low-temperature cooking method, low-temperature cooking can be achieved, and a user can scientifically control the quality of dishes during cooking, so that nutrient substances in food are well reserved.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliance manufacturing, in particular to a steam cooking device and a steam cooking system. Background Art

[0002] A steam oven is a commonly used kitchen appliance, which generally includes an inner pot for placing food. In addition, in order to meet the steaming cooking needs of the steam oven, the steam oven is also provided with a steam generator, which heats water to make steam, and then transports the steam to the inner pot of the steam oven for steaming cooking.

[0003] The existing steam ovens are unable to steam food at low temperature for a long time due to various factors. Moreover, it is not conducive to scientifically controlling the quality of dishes during cooking, and the loss of food nutrients is serious.

[0004] Therefore, it is necessary to provide a steam cooking device and a steam cooking system to solve at least one of the above problems. Utility Model Content

[0005] In view of the defects existing in the prior art, the embodiments of the present invention provide a steam cooking device and a steam cooking system, which can achieve low-temperature cooking, which is beneficial for users to scientifically control the quality of dishes at an ideal cooking temperature during cooking and better preserve the nutrients in the food.

[0006] The specific technical solution of the implementation mode of the utility model is:

[0007] A steam cooking device, comprising: an inner pot, the inner pot comprising a pot body provided with an opening; a panel, the panel being used for a user to operate the steam cooking device; a steam generator, the steam generator being used to provide steam into the inner pot; a first function key, the first function key being arranged on the panel; a controller, the controller being electrically and / or communicatively connected to the steam generator and the first function key, the steam cooking device having at least a first cooking mode, the controller storing a target steam temperature in the inner pot under the first cooking mode, the target steam temperature being between 50 degrees Celsius and 97 degrees Celsius; when the first function key is triggered, the steam cooking device enters the first cooking mode.

[0008] In a preferred embodiment, the steam cooking device further comprises a water supply module, which is connected to an external water source and is used to supply water to the steam generator; when the first cooking mode is started, the external water source replenishes water to the steam cooking device at least once.

[0009] In a preferred embodiment, the steam cooking device further comprises a water box, and when the first cooking mode is started, the water box is used to replenish water to the steam generator.

[0010] In a preferred embodiment, the steam cooking device also includes a bottom plate provided with a heating element, wherein the bottom plate is located on the bottom wall of the inner pot, and part of the steam supplied to the inner pot by the steam generator can flow into the bottom plate after condensation, and the heating element starts heating in the first cooking mode to reduce the amount of water in the bottom plate.

[0011] In a preferred embodiment, the first cooking mode has a preset cooking time, and the preset cooking time is at least 2 hours.

[0012] In a preferred embodiment, the preset cooking time is 3 hours to 5 hours.

[0013] In a preferred embodiment, the steam cooking device further comprises a first temperature detecting member electrically connected to the controller, wherein the first temperature detecting member is used to detect the temperature in the inner pot.

[0014] In a preferred embodiment, the steam generator is a steam generator with adjustable heating power. When the first temperature detection component detects that the temperature in the inner pot does not meet the target steam temperature in the first cooking mode, the controller adjusts the heating power of the steam generator.

[0015] In a preferred embodiment, the steam generator includes any one of the following or a combination thereof: an external steam generator located outside the inner pot, and a built-in steam generator located inside the inner pot.

[0016] In a preferred embodiment, the steam cooking device further comprises a bottom plate provided with a heating element, and the bottom plate provided with a heating element can be used as the built-in steam generator.

[0017] In a preferred embodiment, the steam generator is a steam generator with adjustable heating power, the first cooking mode includes a plurality of target cooking temperatures, and the controller stores a correspondence between the target steam temperatures and the heating power of the steam generator.

[0018] In a preferred embodiment, the steam cooking device further comprises a second temperature detecting member, the controller is electrically connected to the second temperature detecting member and the heating element, the second temperature detecting member is used to detect the temperature of the bottom plate, and the controller can control the working state of the heating element according to the temperature signal detected by the second temperature detecting member.

[0019] In a preferred embodiment, the bottom plate has a first surface located in the inner container and a second surface opposite to the first surface, and the second temperature detecting member is located on the first surface and / or the second surface.

[0020] In a preferred embodiment, a water replenishment port is provided on the inner tank, and the water replenishment port is connected to the water supply module, and the water from the water supply module can flow into the steam generator in the inner tank through the water replenishment port.

[0021] In a preferred embodiment, a water replenishing port is provided on the inner pot, and the water in the water box can flow into the steam generator in the inner pot through the water replenishing port.

[0022] In a preferred embodiment, the steam cooking device further comprises a preheating element. When the first cooking mode is started, the preheating element performs preheating. When the preheating element meets a preheating end condition, the steam generator supplies steam to the inner pot.

[0023] In a preferred embodiment, the water supply module comprises: a water inlet valve, and when the water inlet valve is opened, an external water source can replenish water to the steam cooking device.

[0024] In a preferred embodiment, the water supply module further comprises a water box, and when the water inlet valve is opened, an external water source can replenish water to the water box; the water box can be connected to the steam generator for replenishing water to the steam generator.

[0025] In a preferred embodiment, a water replenishment port is provided on the inner tank, and a control valve is further provided between the water box and the water replenishment port, and the control valve is used to control the connection relationship between the water box and the water replenishment port, and when the control valve is opened, the water box is connected to the water replenishment port; or, the steam generator includes an external steam generator located outside the inner tank, and a control valve is further provided between the external steam generator and the water replenishment port, and the control valve is used to control the connection relationship between the external steam generator and the water replenishment port, and when the control valve is opened, the external steam generator is connected to the water replenishment port.

[0026] In a preferred embodiment, in the first cooking mode, an external water source replenishes the water box at least once.

[0027] In a preferred embodiment, the panel includes any one of the following: an operation panel on the steam cooking device, an operation panel of a mobile terminal or a remote control device capable of communicating with the controller.

[0028] A steam cooking system comprises any one of the above-mentioned steam cooking devices and a water supply device for supplying water to the steam cooking device.

[0029] In a preferred embodiment, the water supply device includes: a water purifier.

[0030] The technical solution of the utility model has the following beneficial effects:

[0031] The steam cooking device provided in the embodiment of the present application is provided with a first cooking mode. When the first cooking mode is activated, the steam cooking device can form a lower steam temperature in the inner pot for cooking. When the cooking temperature is properly controlled, it is beneficial to scientifically control the quality of dishes during cooking and better retain the nutrients in the food. Furthermore, combined with the water replenishment function and the residual water removal function, long-term low-temperature cooking can be achieved without adding water replenishment or residual water cleaning operations to the user during cooking, which is beneficial to ensuring the user experience.

[0032] With reference to the following description and drawings, specific embodiments of the present invention are disclosed in detail, indicating the manner in which the principles of the present invention can be adopted. It should be understood that the embodiments of the present invention are not limited in scope. Within the spirit and scope of the appended claims, the embodiments of the present invention include many changes, modifications and equivalents. Features described and / or shown for one embodiment can be used in one or more other embodiments in the same or similar manner, combined with features in other embodiments, or replace features in other embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The drawings described herein are only for explanation purposes and are not intended to limit the scope of the present invention in any way. In addition, the shapes and proportional dimensions of the components in the drawings are only for illustration purposes to help understand the present invention, and are not intended to specifically limit the shapes and proportional dimensions of the components of the present invention. Under the guidance of the present invention, those skilled in the art can select various possible shapes and proportional dimensions to implement the present invention according to specific circumstances.

[0034] Figure 1 A front view of a steam cooking device provided in an embodiment of the present application;

[0035] Figure 2 This is one of the schematic diagrams of a steam cooking device provided in an embodiment of the present application after the door panel is opened;

[0036] Figure 3 This is a second schematic diagram of a steam cooking device provided in an embodiment of the present application after the door panel is removed and rotated upwards to a certain angle;

[0037] Figure 4 This is one of the schematic diagrams of a steam cooking device provided in an embodiment of the present application with the door panel removed;

[0038] Figure 5 A schematic diagram of a steam cooking device provided in an embodiment of the present application with the bottom facing upward;

[0039] Figure 6 A schematic diagram of a steam cooking system provided in an embodiment of the present application.

[0040] Reference numerals of the present application:

[0041] 100. Steam cooking devices;

[0042] 1. Inner tank; 11. Water filling port; 12. Steam port; 13. Top wall; 14. Bottom wall; 141. Guide groove;

[0043] 2. External steam generator;

[0044] 30. Water box; 31. Water inlet valve; 32. Connecting vessel; 33. Control valve;

[0045] 4. chassis; 40. heating element;

[0046] 5. A first temperature detection member;

[0047] 6. A second temperature detection member;

[0048] 7. Preheating element;

[0049] 8. Door panels;

[0050] 80. Operation panel;

[0051] 801, first function key;

[0052] 200. Water purifier. DETAILED DESCRIPTION

[0053] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. After reading the present invention, various equivalent forms of modifications to the present invention by those skilled in the art fall within the scope defined by the claims attached to this application.

[0054] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0055] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0056] The cooking temperature of the commonly used cooking methods is too high, usually above 100 degrees Celsius (℃). For example, in traditional cooking, the main methods used are frying, stir-frying, deep-frying, boiling, etc. The cooking temperature is generally between 200℃ and 300℃, and sometimes the temperature is even higher. Food can be cooked quickly at high temperatures, and then it is easy to transition to overcooking, resulting in a large loss of nutrients in the food. All food is organic matter. When food is cooked at high temperatures, the organic matter will react at high temperatures, so a large amount of nutrients in the food will be lost.

[0057] For example, based on the current "The Effect of Different Cooking Methods on the Quality of Chicken Soup", it can be known that: when cooked for a long time over low heat, a large amount of chicken protein is hydrolyzed into free amino acids; while under high temperature and high pressure conditions, the free amino acids may participate in the Medrella reaction, so the free amino acids are significantly reduced.

[0058] Low temperature cooking technology is an advanced cooking technology. Compared with traditional cooking technology, low temperature cooking can effectively make up for the shortcomings of traditional cooking. The use of low temperature cooking methods can solve the problems existing in high temperature cooking. The nutrients in general food are dissolved in the water of the food itself. The temperature of low temperature cooking is relatively low, and the water loss in the food is less. The nutrients dissolved in the water of the food itself are not easy to lose too much, and the nutrients at a constant low temperature can be better absorbed. Now people's living standards and quality of life are significantly improved. People pay special attention to diet and advocate healthy diet. Low temperature cooking technology can meet people's needs.

[0059] In general, low-temperature cooking results in low water evaporation, and requires appropriately longer cooking time. This can preserve the original flavor and color of natural foods, provide a rich food aroma, and reduce the use of oil and condiments.

[0060] Further: There are still many problems to be solved when using the current steam cooking device for low-temperature cooking. For example, since the cooking time required for low-temperature cooking is long, and the amount of steam that can be output at one time by the general steam cooking device is limited by the water storage capacity of the water box and cannot meet the needs of low-temperature cooking, the cooking process will be interrupted due to lack of water; since the cooking time required for low-temperature cooking is long and the steam temperature is low, more condensed water will accumulate in the steam cooking device. After the condensed water accumulates to a certain extent, if it is not handled in time, it may overflow, which is not conducive to the continuous operation of low-temperature cooking; and the overflowed residual water requires the user to interrupt cooking to clean it, which will reduce the user's experience.

[0061] The utility model provides a steam cooking device and a steam cooking system, which can realize long-term low-temperature cooking, are conducive to scientifically controlling the quality of dishes during cooking, better retain the nutrients in the food, and do not increase the operation of cleaning residual water for users.

[0062] Please refer to Figures 1 to 6 In an embodiment of the present application specification, a steam cooking device 100 is provided, and the steam cooking device 100 may include: an inner pot 1, wherein the inner pot 1 includes a pot body provided with an opening; a panel, wherein the panel is provided for a user to operate the steam cooking device; a steam generator, wherein the steam generator is used to provide steam to the inner pot 1; a first function key 801, wherein the first function key 801 is provided on the panel; a controller, wherein the controller is electrically and / or communicatively connected to the steam generator and the first function key 801, wherein the steam cooking device has at least a first cooking mode, wherein the controller stores a target steam temperature in the inner pot under the first cooking mode, wherein the target steam temperature is between 50 degrees Celsius and 97 degrees Celsius; when the first function key 801 is triggered, the steam cooking device enters the first cooking mode.

[0063] In the embodiment of the present application, the steam cooking device 100 may be an electrical device that requires the use of steam to work, including but not limited to a steam oven, a steam box, and the like.

[0064] The steam cooking device 100 may mainly include: an inner pot 1, a steam generator, a panel provided with a first function key 801, a controller, etc.

[0065] In some embodiments, the steam cooking device 100 may further include a water supply module. The water supply module is connected to an external water source and is used to supply water to the steam generator; when the first cooking mode is started, the external water source replenishes water to the steam cooking device at least once.

[0066] like Figure 4As shown, in addition, the steam cooking device may further include a water box 30, and when the first cooking mode is started, the water box 30 is used to replenish water to the steam generator. The water box 30 may be a water storage container with a predetermined volume. The water box 30 may be located in the communicating water path between the external water source and the steam generator. Generally, the volume of the water box 30 is greater than the volume of the steam generator. The water supplied to the water box 30 by the external water source may replenish water to the steam generator multiple times.

[0067] For the embodiment provided with the water box 30, when the steam cooking device enters the first cooking mode, when the water level of the steam generator is lower than the water replenishment level during use, the water box 30 can replenish water to the steam generator. Considering that the cooking time is long and the amount of water required is large when entering the first cooking mode, the volume of the water box 30 can be increased without replenishing water to the water box 30 to meet the needs of long-term low-temperature cooking.

[0068] Please refer to Figure 3 , Figure 4 and Figure 5 In some embodiments, the steam cooking device may further include a bottom plate 4 provided with a heating element 40. The bottom plate 4 is located on the bottom wall 14 of the inner pot 1, and part of the steam supplied to the inner pot 1 by the steam generator can flow into the bottom plate 4 after condensation, and the heating element 40 starts heating in the first cooking mode to reduce the amount of water in the bottom plate 4.

[0069] In the embodiment of the present application, the inner pot 1 can be a hollow box-type structure, in which a heating cavity is arranged, and the heating cavity is used to accommodate the food to be cooked. The heating cavity of the inner pot 1 has a top wall 13 and a bottom wall 14 relative to each other, and the bottom plate 4 can be located on the bottom wall 14. During the use of the steam cooking device 100, the steam in the inner pot 1 can flow into the bottom plate 4 after condensation. One of the functions of the bottom plate 4 is to collect condensed water. Specifically, the bottom plate 4 can be a groove formed on the bottom wall 14. The shape of the groove can be circular. Of course, the shape of the groove is not limited to the above example, and it can also be other structures.

[0070] In the embodiment of the present application, the steam generator can heat water into steam to be directed into the heating chamber of the inner pot 1. Specifically, the steam generator can include any one of the following or a combination thereof: an external steam generator 2 located outside the inner pot 1, and a built-in steam generator located inside the inner pot 1.

[0071] The steam generator may include: an external steam generator 2 arranged outside the inner container 1 .

[0072] The external steam generator 2 may include a container with a certain volume, in which a heating element for heating water may be provided. In addition, a liquid level gauge for detecting the liquid level, a thermometer for detecting the temperature, etc. may also be provided in the container. The external steam generator 2 may be located on the top of the inner pot 1.

[0073] In addition, a steam port 12 may be provided on the inner pot 1, and the steam port 12 may be connected to the external steam generator 2, and the steam generated by the external steam generator 2 may enter the heating chamber of the inner pot 1 through the steam port 12. Specifically, the steam port 12 may be provided on the top wall 13 of the inner pot 1. On the one hand, the steam port 12 provided on the top wall 13 of the inner pot 1 is closer to the external steam generator 2, thereby shortening the flow path of the steam. On the other hand, it is also conducive to the flow of steam under the action of gravity, thereby evenly filling the entire heating chamber of the inner pot 1, so that the cooked food can be evenly heated.

[0074] The steam generator may include a built-in steam generator. Specifically, the bottom plate 4 provided with the heating element 40 can be used as the built-in steam generator. Of course, the built-in steam generator may also be in other forms. In the embodiment of the present application, when the bottom plate 4 provided with the heating element 40 is used as the built-in steam generator, it is equivalent to using the same set of components to achieve multiple functions: residual water removal function, and the function of providing steam required for cooking.

[0075] In the embodiment of the present application, for the chassis 4 provided with the heating element 40, in addition to starting the heating element 40 to heat the condensed water collected in the chassis 4, thereby preventing excessive water in the chassis 4 or even overflowing, the water supply module can also be used to replenish water in the chassis 4, and steam can be generated by starting the heating element 40. At this time, the chassis 4 provided with the heating element 40 can be used as a built-in steam generator.

[0076] like Figure 4 As shown, the inner tank 1 may be provided with a water replenishment port 11, and the water replenishment port 11 is connected to the water supply module, and the water of the water supply module can flow into the chassis 4 through the water replenishment port 11. Specifically, the water replenishment port 11 may be located on the wall of the inner tank 1. The chassis 4 may be located in the middle of the bottom wall 14 of the inner tank 1, and a plurality of guide grooves 141 may be evenly arranged around the chassis 4. The guide grooves 141 may be used to guide the water on the wall of the inner tank 1 into the chassis 4, and the guide grooves 141 may also be used to form a reinforcement structure for the bottom wall 14 of the inner tank 1. For example, four guide grooves 141 may be arranged along the circumference of the chassis 4, and one end of the four guide grooves 141 is connected to the chassis 4, and the other end is connected to the four corners where the bottom wall 14 of the inner tank 1 and the side wall intersect.

[0077] In an embodiment of the present application, the water supply module can be connected to an external water source to supply water to the steam generator. The inner tank 1 has a relative top and bottom. In some embodiments, the external steam generator 2 and the water supply module can be located on the top of the inner tank 1, so that the top of the inner tank 1 is used to provide a unified installation platform for the external steam generator 2 and the water supply module. Of course, in other embodiments, the specific positions of the external steam generator 2 and the water supply module can also be adjusted according to design requirements, and this application does not make specific limitations here.

[0078] In addition, for the embodiment in which the water box 30 is provided, the water in the water box 30 can flow into the steam generator in the inner pot 1 through the water replenishment port 11. Specifically, the steam generator in the inner pot 1 can be a built-in steam generator, and its specific form can be the form of the bottom plate 4 provided with the heating element 40 as described above. Of course, the specific form of the built-in steam generator is not limited to the above example.

[0079] In the embodiment of the present application, the steam cooking device 100 includes at least a first cooking mode. Specifically, the first cooking mode has a preset cooking time, and the preset cooking time is at least 2 hours. More specifically, the preset cooking time can be 3 hours to 5 hours, for example, 4 hours. When the steam cooking device 100 is set to the first cooking mode of long-time cooking, the effect of slow cooking can be achieved.

[0080] The first cooking mode is specifically a low-temperature cooking mode, in which the temperature of the steam in the inner pot 1 is between 50 degrees Celsius and 97 degrees Celsius. Of course, in addition to the first cooking mode, the steam cooking device 100 may also include other cooking modes with a steam temperature greater than 97 degrees Celsius, or a grilling mode with a higher temperature, etc. The other cooking modes of the steam cooking device 100 will not be described in detail in this application.

[0081] When the first cooking mode is a low-temperature cooking mode, in this low-temperature cooking mode, the steam temperature in the inner pot 1 is controlled below 97 degrees Celsius. When food is steamed for a long time, it is ensured that the food will not exceed a sub-boiling state, that is, it will not be overcooked, thereby better retaining the nutrients in the food, retaining the original flavor and color of the natural food, having a strong food aroma, and reducing the use of oil and condiments.

[0082] The steam temperature in the inner pot 1 of the steam cooking device 100 may be set to different heating temperature ranges for different ingredients. Specifically, in the first cooking mode, multiple heating temperature ranges may be set for the user to choose from. The specific division of the heating temperature range is not specifically limited in this application.

[0083] In the implementation manner of the present application, the first cooking mode is mainly explained by taking the heating temperature below 97 degrees Celsius as an example, that is, the first cooking mode is mainly explained in detail as a low-temperature cooking mode.

[0084] Please refer to Figure 1 and Figure 2 In this embodiment, the steam cooking device 100 further includes an operation panel 80 for a user to operate the steam cooking device. Specifically, the operation panel 80 is provided with a first function key 801 for starting the low temperature cooking mode.

[0085] In this embodiment, the steam cooking device 100 may further include a controller, and the controller is electrically connected and / or communicatively connected to the steam generator and the first function key 801 .

[0086] Specifically, the panel may include any one of the following: an operation panel 80 on the steam cooking device, an operation panel 80 of a mobile terminal or a remote control device that can communicate with the controller.

[0087] In this embodiment, the inner pot 1 may have an opening toward the user, and a door panel 8 that can be opened and closed may be provided at the opening. The operation panel 80 may be provided at the same or similar position as the door panel 8. A first function key 801 for a low-temperature cooking mode may be provided on the operation panel 80. The specific form of the first function key 801 may be a mechanical key structure, an electronic touch structure, or of course other forms. The present application does not specifically limit the specific form of the first function key 801. When the first function key 801 is electrically connected to the controller, it may also communicate with the controller wirelessly. For example, when the first function key 801 is provided on the operation panel 80 of the steam cooking device, the controller may be electrically connected to the first function key 801; when the first function key 801 is provided on a mobile terminal or a remote control device, the first function key 801 or a terminal device provided with the first function key 801 may be connected to the controller for communication.

[0088] In addition, the first function key 801 may be one or more. For example, when the first function key 801 is one, when the first function key 801 is triggered, multiple cooking temperature ranges can be provided to the user for selection, so that the user can cook different ingredients. In addition, the steam cooking device can store different low-temperature cooking recipes in the first cooking mode. When the first function key 801 is triggered, the low-temperature cooking recipe can be displayed to the user, so that the user can select the corresponding recipe according to the cooking ingredients.

[0089] Of course, in addition to setting the above-mentioned first function key 801 on the operation panel 80, a program for controlling the steam cooking mode to enter the low-temperature cooking mode can also be synchronously set on the APP of the mobile terminal, or a corresponding control program can be set on other remote control devices, and communicate with the controller of the steam cooking device 100. The user can control the steam cooking device 100 to enter the low-temperature cooking mode by operating the mobile terminal or remote control device. In addition, the low-temperature cooking status can also be displayed on the mobile terminal or other remote control devices, such as the current cooking temperature, the current cooking time, and the time until the end of cooking.

[0090] In the embodiment of the present application, when the first cooking mode is started, the external water source replenishes water to the steam cooking device 100 at least once.

[0091] The steam cooking device 100 can be connected to an external water source. When the steam cooking device 100 needs to be replenished with water, the steam cooking device 100 can be connected to the external water source, so that the external water source can be used to replenish water to the steam cooking device 100, so that when the steam cooking device 100 works for a long time in the first cooking mode, cooking will not be interrupted due to lack of water.

[0092] In one embodiment, the water supply module may include: a water inlet valve 31. When the water inlet valve 31 is opened, an external water source can replenish water to the steam cooking device 100.

[0093] The water inlet valve 31 can be used to control the connection between the steam cooking device 100 and an external water source. When the water inlet valve 31 is opened, the external water source is connected to the steam cooking device 100, so that water can be replenished to the steam cooking device 100; when the water inlet valve 31 is disconnected, the external water source is not connected to the steam cooking device 100.

[0094] In a specific embodiment, the water supply module may further include a water box 30. When the water inlet valve 31 is opened, an external water source can replenish water to the water box 30. The water box 30 can be connected to the steam generator to replenish water to the steam generator.

[0095] In this embodiment, the water supply module of the steam cooking device 100 may include a water box 30, which may be a water storage container with a predetermined volume. The water box 30 may be located in the communicating waterway between the external water source and the steam generator. Generally, the volume of the water box 30 is greater than the volume of the steam generator. The water supplied to the water box 30 by the external water source may replenish water to the steam generator multiple times. A control valve 33 may be provided between the water box 30 and the steam generator. When the steam generator needs to replenish water, the control valve 33 is opened, and the water box 30 replenishes water to the steam generator. When the water level of the steam generator reaches a preset water level, the control valve 33 is disconnected, and the water box 30 stops replenishing water to the steam generator. Of course, in some embodiments without the water box 30, the external water source may also directly replenish water to the steam generator.

[0096] In addition, the water supply module may also include a communicating vessel 32 connected to the water box 30 and the steam generator. By setting the communicating vessel 32, the liquid level of the water box 30 is indirectly controlled by controlling the liquid level of the communicating vessel 32 during water replenishment, that is, the communicating vessel 32 is used as an intermediate buffer container to prevent the external water source from causing fluctuations in the liquid supply flow (for example, excessive flow), which may cause problems such as water level control disorder and overflow in the water box 30.

[0097] For the embodiment in which the water supply module is provided with a water box 30 , in the first cooking mode, the water box 30 is replenished with water by an external water source at least once.

[0098] Specifically, before starting the low-temperature cooking mode, the water level in the water box 30 can be detected first. When the water level in the water box 30 is above the preset water level, it means that the water in the water box 30 is sufficient, and the low-temperature cooking mode can be directly started. When the steam cooking device 100 is running in the low-temperature cooking mode, if the water level in the water box 30 is lower than the minimum water level, the external water source can be connected to the water box 30 to replenish water at least once. When the water level in the water box 30 is lower than the preset water level before starting the low-temperature cooking mode, it means that the water in the water box 30 is insufficient. At this time, the external water source can be connected to the water box 30, and the water box 30 can be replenished with water once before starting the low-temperature cooking mode. After the low-temperature cooking mode is subsequently started, if the water level in the water box 30 is lower than the minimum water level, the external water source can be connected to the water box 30 to replenish water at least once, thereby ensuring that the steam cooking device 100 will never lack water during long-term low-temperature cooking.

[0099] In the embodiment of the present application, the heating element 40 starts heating in the first cooking mode to reduce the amount of water in the bottom pan 4 .

[0100] In this embodiment, when the first cooking mode is started, the steam generated by the steam generator will condense in the inner pot 1 and flow into the bottom pan 4 along the inner wall of the inner pot 1. Especially for the low-temperature cooking mode, the steam temperature is relatively low, condensation is more likely to occur, and the cooking time is long. During the low-temperature cooking process, a large amount of condensed water flows into the bottom pan 4. In order to prevent the condensed water from accumulating in the bottom pan 4 in large quantities or even overflowing, when the first cooking mode is started, the heating element 40 can be started to reduce the amount of water in the bottom pan 4.

[0101] When the heating element 40 on the bottom plate 4 is started, the condensed water collected in the bottom plate 4 can be heated and evaporated, so that the amount of condensed water in the bottom plate 4 can be controlled so that it is not excessive, thereby avoiding the problem of residual water overflow.

[0102] In one embodiment, when the chassis 4 provided with the heating element 40 needs to be replenished with water as a built-in steam generator, a control valve (not shown in the figure) can also be provided between the water box 30 and the water replenishment port 11, and the control valve is used to control the connection relationship between the water box 30 and the water replenishment port 11. When the control valve is opened, the water box 30 is connected to the water replenishment port 11; when the water box 30 is connected to the water replenishment port 11, the water in the water box 30 can flow into the chassis 4 through the water replenishment port 11.

[0103] Alternatively, a control valve (not shown in the figure) is further provided between the external steam generator 2 and the water replenishment port 11, and the control valve is used to control the communication relationship between the external steam generator 2 and the water replenishment port 11. When the control valve is opened, the external steam generator 2 is connected to the water replenishment port 11. When the external steam generator 2 is connected to the water replenishment port 11, the water in the external steam generator 2 can flow into the bottom plate 4 through the water replenishment port 11.

[0104] In some embodiments, the steam cooking device 100 further includes a first temperature detecting member 5 , and the first temperature detecting member 5 is used to detect the temperature in the inner pot 1 .

[0105] In order to accurately obtain the cooking temperature in the inner pot 1, a first temperature detection member 5 can be provided in the inner pot 1. Specifically, the first temperature detection member 5 can be provided on the top wall 13 of the heating cavity of the inner pot 1, at a certain distance from the steam port 12, so as to accurately obtain the current temperature in the inner pot 1.

[0106] The controller is electrically connected to the steam generator and the first temperature detection element 5. The steam generator is a steam generator with adjustable heating power. When the temperature in the inner pot 1 does not meet the requirements of the low-temperature cooking mode, the controller controls the steam generator to adjust the heating power.

[0107] In order to accurately control the temperature in the inner pot 1 so that it can meet the target temperature set in the low-temperature cooking mode, the first temperature detection component 5 can be electrically connected to the controller. When the first temperature detection component 5 detects that the current temperature in the inner pot 1 deviates from the target cooking temperature by a large amount (for example, outside ±2°C), the controller can control the steam generator to adjust the heating power and change the amount of steam supplied to the inner pot 1, thereby adjusting the temperature in the inner pot 1 to make it close to or reach the target cooking temperature.

[0108] In a specific embodiment, the steam generator is a steam generator with adjustable heating power, the first cooking mode includes a plurality of target cooking temperatures, and the controller stores a correspondence between the target cooking temperatures and the heating power of the steam generator.

[0109] In this embodiment, the steam generator is a steam generator with adjustable heating power, and the steam output can be changed by adjusting the heating power of the steam generator. Wherein, when there are multiple steam generators, adjusting the heating power of the steam generator can specifically include any one of the following or a combination thereof: increasing or decreasing the number of steam generators, and adjusting the heating power of a heating component in at least one steam generator.

[0110] In this embodiment, the first cooking mode includes a plurality of target cooking temperatures, and different target cooking temperatures can be used to cook different ingredients. The controller may store a corresponding relationship between the target cooking temperature and the heating power of the steam generator.

[0111] When the first cooking mode is started, the user can select the corresponding target cooking temperature according to the actual cooking ingredients. The controller can determine the heating power of the steam generator according to the current target cooking temperature based on the corresponding relationship between the target cooking temperature and the heating power of the steam generator. After determining the heating power of the steam generator, the steam generator can be controlled to heat with the heating power matching the current target cooking temperature. During the operation of the steam generator, the first temperature detection member 5 can be used to detect the temperature in the inner pot 1. When the temperature in the inner pot 1 rises to a difference with the target cooking temperature within a preset temperature range, the heating power of the steam generator can be gradually reduced. In this way, the temperature in the inner pot 1 can be quickly increased at the initial stage of cooking, so that it reaches the target cooking temperature at a faster speed. When the temperature in the inner pot 1 approaches the target cooking temperature, by reducing the heating power of the steam generator, it is conducive to accurate temperature control, so that the temperature in the inner pot 1 can be stabilized near the target cooking temperature, thereby reducing the probability of overheating in the inner pot 1.

[0112] In some embodiments, the steam cooking device 100 may further include a second temperature detection component 6 and a controller, wherein the controller is electrically connected to the second temperature detection component 6 and the heating element 40, and the second temperature detection component 6 is used to detect the temperature of the chassis 4. The controller can control the working state of the heating element 40 according to the temperature signal detected by the second temperature detection component 6.

[0113] In this embodiment, the steam cooking device 100 can detect the temperature of the chassis 4 by providing a second temperature detection member 6. The second temperature detection member 6 and the heating element 40 can be electrically connected to the controller. The controller can store the control logic of the heating element 40 based on different temperatures. The controller can control the working state of the heating element 40 based on the temperature signal detected by the second temperature detection member 6. Specifically, the working state of the heating element 40 includes: an open and closed state. When the heating element 40 is a heating element 40 with adjustable heating power, the working state of the heating element 40 can also include: adjusting the heating power of the heating element 40.

[0114] In some embodiments, the bottom plate 4 has a first surface located in the inner container 1 and a second surface opposite to the first surface, and the second temperature detecting member 6 is located on the first surface and / or the second surface.

[0115] In this embodiment, the bottom plate 4 can be integrally formed with the bottom wall 14 of the heating chamber in the inner pot 1, and the bottom plate 4 has a first surface located in the inner pot 1 and a second surface opposite to the first surface. Among them, the second temperature detection member 6 can be located on at least one of the first surface and the second surface. In one embodiment, the controller further includes a self-learning module, which can be used to obtain the target time required for the heating element 40 to dry a predetermined amount of water in the bottom plate 4 after the steam generator is started in the first cooking mode; the controller determines the water replenishment interval duration for the water supply module to replenish water into the bottom plate 4 based on the target time duration obtained by the self-learning module.

[0116] In this embodiment, when the self-learning module is self-learning, after starting the steam cooking device 100, it can first provide a predetermined amount of water into the chassis 4, start the heating element 40, and obtain a first moment when the predetermined amount of water is boiled dry; then provide a predetermined amount of water into the chassis 4, and obtain a second moment when the predetermined amount of water is boiled dry, and the target duration is determined based on the difference between the second moment and the first moment.

[0117] The purpose of starting the steam cooking device 100 is mainly to consider that steam will be generated after the steam cooking device 100 is started, and part of the generated steam will be condensed and flow into the bottom plate 4. In order to take into account the influence of the water that condenses and flows into the bottom plate 4, and to create the same external conditions as the subsequent interval water replenishment, the steam cooking device 100 can be started first.

[0118] The target duration may be the difference between the second moment and the first moment. The water replenishment interval duration may be the target duration. When the water replenishment interval duration is the target duration, if the water replenished at a single time is a predetermined amount of water, it is equivalent to connecting the water supply module with the water replenishment port 11 each time the water in the chassis 4 is dried up, thereby supplying a predetermined amount of water into the chassis 4.

[0119] Alternatively, the water replenishment interval duration may be the target duration minus the protection duration. When the water replenishment interval duration is the target duration minus the protection duration, the protection duration may be a fixed and shorter time, for example, 60 seconds, 50 seconds, 40 seconds, 30 seconds, etc. In this way, before the chassis 4 reaches the dry-burning state, the water supply module may be connected to the water replenishment port 11, thereby supplying a predetermined amount of water into the chassis 4 to prevent the chassis 4 from being periodically dry-burned, thereby extending the service life of the chassis 4.

[0120] In addition, considering that each time a predetermined amount of water is added, there is a small amount of water in the chassis 4 that has not been boiled dry, after multiple water replenishment cycles, the water in the chassis 4 may accumulate more and more. At this time, the protection time can be adjusted to gradually reduce it; or without adjusting the protection time, in order to reduce the water in the chassis 4, the amount of water added each time can be gradually reduced, so that when the first cooking mode ends, the water in the chassis 4 can be controlled within a smaller range, such as or less than 300 ml, or even zero. When there is a small amount of water in the chassis 4, the small amount of water can automatically evaporate under the residual temperature of the chassis 4, thereby eliminating the user's operation of cleaning the chassis 4 and improving the user's experience. Of course, in other embodiments, the water replenishment interval duration can also be a variable, for example, the water replenishment interval duration can also be adjusted based on the target duration and the water replenishment amount.

[0121] In one embodiment, during the process of starting the heating element 40 , when the second temperature detecting member 6 detects that the temperature of the bottom pan 4 reaches a preset temperature, the water supply module is controlled to replenish water to the bottom pan 4 .

[0122] In this embodiment, the trigger condition for the water supply module to replenish water to the chassis 4 may be the temperature of the chassis 4. When the second temperature detection member 6 detects that the temperature of the chassis 4 reaches a preset temperature, it indicates that the water in the chassis 4 has been boiled dry, and it is necessary to replenish water to the chassis 4. The preset temperature may be the temperature when the chassis 4 starts to dry out.

[0123] In one embodiment, the heating element 40 is a heating element 40 with adjustable heating power, and the heating element 40 includes at least a first heating power and a second heating power, the first heating power is greater than the second heating power, and when the second temperature detection component 6 detects that the temperature of the chassis 4 is lower than a preset temperature, the heating element 40 operates at the first heating power; when the second temperature detection component 6 detects that the temperature of the chassis 4 reaches the preset temperature, the heating element 40 operates at the second heating power.

[0124] In this embodiment, the heating element 40 on the chassis 4 may be a heating element 40 with adjustable heating power. The heating power of the heating element 40 may be adjusted according to the temperature of the chassis 4 detected by the second temperature detection member 6. When adjusting, the current temperature of the chassis 4 may be compared with a preset temperature, or the current temperature change of the chassis 4 may be compared with a preset temperature change. Subsequently, it is determined whether the heating power needs to be adjusted and how to adjust it specifically based on the comparison result.

[0125] The heating element 40 may include a variety of different heating powers. For example, the heating element 40 at least includes a first heating power and a second heating power. The first heating power may be greater than the second heating power.

[0126] When the temperature of the bottom plate 4 is lower than a preset temperature (the preset temperature may be a dry-burning temperature when the water in the bottom plate 4 is boiled dry, or a temperature or temperature range close to the dry-burning temperature) at the initial start-up of the heating element 40, the heating element 40 may first operate at a larger first heating power; when the second temperature detecting component 6 detects that the temperature of the bottom plate 4 reaches the preset temperature, the heating element 40 may switch to a lower second heating power, and utilize the heating element 40 operating at the second heating power to heat water generated after subsequent steam condensation, thereby preventing water in the bottom plate 4 from accumulating more and more during a long cooking process.

[0127] The scenario in which the chassis 4 first operates at a larger heating power and then switches to a smaller heating power can be applicable to the situation in which water is replenished in the chassis 4 at the beginning of starting the first cooking mode, or a certain amount of water originally exists in the chassis 4.

[0128] In the initial stage of starting the first cooking mode, if no water is added to the bottom pan 4, or there is no water or very little water in the bottom pan 4, the heating element 40 may continue to operate below a predetermined heating power.

[0129] In this embodiment, the heating element 40 can be continuously operated at a relatively low heating power, so as to keep the bottom pan 4 heated and continuously and slowly reduce the condensed water flowing into the bottom pan 4 .

[0130] In one embodiment, during the process of starting the heating element 40, the heating element 40 is heated at intervals. Within an interval heating cycle, when the second temperature detecting component 6 detects that the temperature of the chassis 4 reaches a preset temperature, the heating element 40 is switched from a heating state to a stop heating state.

[0131] In this embodiment, the heating element 40 can be started at intervals. For example, the heating element 40 can heat for a first time, stop heating for a second time, heat for the first time again, and stop heating for the second time, and so on. Specifically, when the heating element 40 is operated at a certain heating power, during operation, the speed at which the heating element 40 heats and evaporates the water in the chassis 4 is greater than the accumulation speed of the condensed water in the chassis 4. After heating for a period of time, the water in the chassis 4 is evaporated, and the temperature of the chassis 4 rises rapidly, that is, it enters a dry-burning state. The temperature of the chassis 4 can be detected by the second temperature detection member 6. At this time, the controller can control the heating element 40 to suspend heating; the residual temperature of the current chassis 4 can also be used to evaporate the water flowing into the chassis 4 for a period of time. When the temperature of the chassis 4 gradually decreases and a certain amount of water is accumulated in the chassis 4 again, the heating element 40 can be started again for heating.

[0132] In some embodiments, the steam cooking device 100 further includes a preheating element 7. When the first cooking mode is started, the preheating element 7 performs preheating. When the preheating element 7 meets a preheating end condition, the steam generator supplies steam to the inner pot 1.

[0133] In this embodiment, the steam cooking device 100 may also be provided with a preheating element 7, which is used to preheat the inner pot 1, thereby increasing the temperature of the inner pot 1 and reducing the generation of condensed water. Specifically, the preheating element 7 may be a heating element arranged in the inner pot 1. The heating element may be an electric heating element, which may be an electric heating rod arranged near the top wall 13 of the inner pot 1.

[0134] When the first cooking mode is started, the preheating element 7 is preheated, and when the preheating element 7 meets the preheating end condition, the steam generator supplies steam to the inner pot 1.

[0135] The preheating end condition includes any one of the following: the working time of the preheating element 7 reaches the first preheating time, and the air temperature of the inner tank 1 reaches the target preheating temperature and has been maintained for the second preheating time.

[0136] In this embodiment, when the heating power of the preheating element 7 is a fixed value, the preheating end condition can be determined according to the working time of the preheating element 7. When the working time of the preheating element 7 reaches the first preheating time, the heat supplied by the preheating element 7 to the inner pot 1 is sufficient to raise the temperature of the inner pot 1 to above the target preheating temperature, and at this time, the preheating can be stopped.

[0137] Alternatively, the preheating end condition can be determined according to the temperature in the inner pot 1. When the first temperature detection member 5 detects that the air temperature in the inner pot 1 reaches the target preheating temperature, the preheating element 7 can be controlled to maintain the second preheating time so that the temperature in the inner pot 1 evenly and reliably reaches above the target preheating temperature, and the preheating can be stopped at this time.

[0138] The steam cooking device 100 provided in the embodiment of the present application is provided with a first cooking mode. When the first cooking mode is started, the external water source replenishes water to the steam cooking device 100 at least once. When the steam cooking device 100 needs to be replenished with water, the steam cooking device 100 can be connected to the external water source, so that the steam cooking device 100 is replenished with water by using the external water source, so that the steam cooking device 100 will not be interrupted due to lack of water when the steam cooking device 100 works for a long time in the first cooking mode. In addition, when the first cooking mode is started, the heating element 40 on the bottom plate 4 can be started. When the heating element 40 on the bottom plate 4 is started, the condensed water collected in the bottom plate 4 can be heated and evaporated, so that the amount of condensed water in the bottom plate 4 can be controlled so that it is not too much, thereby avoiding the problem of residual water overflow. On the whole, the steam cooking device 100 provided in the present application, when the cooking temperature is reasonably controlled, combined with the water replenishment function and the residual water removal function, can achieve long-term low-temperature cooking, which is conducive to scientifically controlling the quality of dishes during cooking and better retaining the nutrients in the food, while not adding the operation of cleaning residual water for the user.

[0139] like Figure 6 As shown, the embodiment of the present application also provides a steam cooking system, which mainly includes the steam cooking device 100 and a water supply device for supplying water to the steam cooking device 100. The steam cooking system can achieve the technical effect achieved by the steam cooking device 100 embodiment by setting the steam cooking device 100. For details, please refer to the specific description of the above embodiment, and the present application will not repeat it here.

[0140] Since the steam cooking device 100 and the water supply end are both connected to the central controller for communication, when the steam cooking device 100 needs to replenish water, it can send a water replenishment demand signal to the central controller, and the central controller can control the water supply end to start and produce water after receiving the water replenishment demand signal. Subsequently, after the water replenishment reaches a predetermined amount of water, the steam cooking device 100 can send a water replenishment termination signal to the central controller to stop replenishing water, and the central controller controls the water supply end to stop producing water after receiving the water replenishment termination signal.

[0141] In addition, the steam cooking device 100 and the water supply end (taking the water purifier 200 as an example) may not communicate with each other. For example, a water pressure detection module may be provided on the branch line connecting the water purifier and the steam cooking device 100, and the water pressure detection module may be used to detect the water use status of the steam cooking device 100. If the water pressure detection module detects that the steam cooking device 100 uses water, the water purifier may be connected to the steam cooking device 100, and the water purifier may supply water to the steam cooking device 100.

[0142] Wherein, the water supply device may include: a water purifier 200. When the water supply end is a water purifier 200, the water purifier 200 may provide purified water to the water box 30 through a water supply module. In the embodiment of the present application, the water supply end is mainly illustrated by taking the water purifier 200 as an example. Of course, the water supply end may also be in other forms, such as a water softener, etc., and is not limited to the above description. Technicians in the relevant field may make other changes under the inspiration of the technical essence of the present application, but as long as the functions and effects achieved are the same or similar to those of the present application, they should be covered within the protection scope of the present application.

[0143] It should be noted that, in the description of this application, the terms "first", "second", etc. are only used for descriptive purposes and to distinguish similar objects. There is no order of precedence between the two, and they cannot be understood as indicating or implying relative importance. In addition, in the description of this application, unless otherwise specified, the meaning of "plurality" is two or more.

[0144] The above-mentioned various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other. Each embodiment focuses on the differences from other embodiments.

[0145] The above are only a few embodiments of the present invention. Although the embodiments disclosed by the present invention are as above, the contents are only embodiments adopted for facilitating the understanding of the present invention and are not used to limit the present invention. Any technician in the technical field to which the present invention belongs can make any modification and change in the form and details of the implementation without departing from the spirit and scope disclosed by the present invention, but the scope of patent protection of the present invention shall still be subject to the scope defined by the attached claims.

Claims

1. A steam cooking device, characterized in that: include: An inner liner, the inner liner comprising a liner body with an opening; A panel, wherein the panel is used by a user to operate the steam cooking device; A steam generator, the steam generator is used to provide steam to the inner pot; a first function key, wherein the first function key is arranged on the panel; a controller, wherein the controller is electrically and / or communicatively connected to the steam generator and the first function key, the steam cooking device has at least a first cooking mode, the controller stores a target steam temperature in the inner pot under the first cooking mode, and the target steam temperature is between 50 degrees Celsius and 97 degrees Celsius; when the first function key is triggered, the steam cooking device enters the first cooking mode.

2. The steam cooking device according to claim 1, characterized in that: The steam cooking device further comprises a water supply module, which is connected to an external water source and is used to supply water to the steam generator; when the first cooking mode is started, the external water source replenishes water to the steam cooking device at least once.

3. The steam cooking device according to claim 1, characterized in that: The steam cooking device further comprises a water box for replenishing water to the steam generator when the first cooking mode is activated.

4. The steam cooking device according to claim 1, characterized in that: The steam cooking device also includes a bottom plate provided with a heating element, wherein the bottom plate is located on the bottom wall of the inner pot, and part of the steam supplied to the inner pot by the steam generator can flow into the bottom plate after condensation, and the heating element starts heating in the first cooking mode to reduce the amount of water in the bottom plate.

5. The steam cooking device according to claim 1, characterized in that: The first cooking mode has a preset cooking time, and the preset cooking time is at least 2 hours.

6. The steam cooking device according to claim 5, characterized in that: The preset cooking time is 3 hours to 5 hours.

7. The steam cooking device according to claim 1, characterized in that: The steam cooking device further comprises a first temperature detecting member electrically connected to the controller, wherein the first temperature detecting member is used to detect the temperature in the inner pot.

8. The steam cooking device according to claim 7, characterized in that: The steam generator is a steam generator with adjustable heating power. When the first temperature detection component detects that the temperature in the inner pot does not meet the target steam temperature in the first cooking mode, the controller adjusts the heating power of the steam generator.

9. The steam cooking device according to claim 8, characterized in that: The steam generator includes any one of the following or a combination thereof: an external steam generator located outside the inner container, and a built-in steam generator located inside the inner container.

10. The steam cooking device according to claim 9, characterized in that: The steam cooking device further comprises a bottom plate provided with a heating element, and the bottom plate provided with a heating element can be used as the built-in steam generator.

11. The steam cooking device according to claim 1, characterized in that: The steam generator is a steam generator with adjustable heating power. The first cooking mode includes a plurality of target cooking temperatures. The controller stores a correspondence between the target steam temperatures and the heating power of the steam generator.

12. The steam cooking device according to claim 4, characterized in that: The steam cooking device also includes a second temperature detection component, the controller is electrically connected to the second temperature detection component and the heating element, the second temperature detection component is used to detect the temperature of the bottom plate, and the controller can control the working state of the heating element according to the temperature signal detected by the second temperature detection component.

13. The steam cooking device according to claim 12, characterized in that: The bottom plate has a first surface located in the inner container and a second surface opposite to the first surface, and the second temperature detecting member is located on the first surface and / or the second surface.

14. The steam cooking device according to claim 2, characterized in that: The inner tank is provided with a water replenishing port, the water replenishing port is connected to the water supply module, and the water of the water supply module can flow into the steam generator in the inner tank through the water replenishing port.

15. The steam cooking device according to claim 3, characterized in that: The inner tank is provided with a water replenishing port, and the water in the water box can flow into the steam generator in the inner tank through the water replenishing port.

16. The steam cooking device according to claim 1, characterized in that: The steam cooking device further comprises a preheating element. When the first cooking mode is started, the preheating element performs preheating. When the preheating element meets a preheating end condition, the steam generator supplies steam into the inner pot.

17. The steam cooking device according to claim 2, characterized in that: The water supply module comprises a water inlet valve. When the water inlet valve is opened, an external water source can replenish water to the steam cooking device.

18. The steam cooking device according to claim 17, characterized in that: The water supply module also includes a water box. When the water inlet valve is opened, an external water source can replenish water to the water box; the water box can be connected to the steam generator to replenish water to the steam generator.

19. The steam cooking device according to claim 18, characterized in that: A water replenishment port is provided on the inner tank, and a control valve is also provided between the water box and the water replenishment port, and the control valve is used to control the connection relationship between the water box and the water replenishment port. When the control valve is opened, the water box is connected to the water replenishment port; or, the steam generator includes an external steam generator located outside the inner tank, and a control valve is also provided between the external steam generator and the water replenishment port. The control valve is used to control the connection relationship between the external steam generator and the water replenishment port. When the control valve is opened, the external steam generator is connected to the water replenishment port.

20. The steam cooking device according to claim 18, characterized in that: In the first cooking mode, the water box is replenished with water from an external water source at least once.

21. The steam cooking device according to claim 1, characterized in that: The panel includes any one of the following: an operation panel on the steam cooking device, an operation panel of a mobile terminal or a remote control device capable of communicating with the controller.

22. A steam cooking system, characterized in that: The invention comprises the steam cooking device according to any one of claims 1 to 21, and a water supply device for supplying water to the steam cooking device.

23. The steam cooking system according to claim 22, characterized in that: The water supply device comprises: a water purifier.

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