Cooking device

Abstract

The utility model relates to the field of kitchen ware, and provides a cooking device which comprises a cooker and a preheater, the cooker comprises a cooking container, the preheater is arranged outside the cooking container, the preheater comprises a preheating container and a preheating heating piece, the preheating heating piece is used for heating water in the preheating container, and the preheating container is communicated with the cooking container to supply water to the cooking container. Water is heated through the preheater and then fed into the cooking container to cook food, other operations can be conveniently performed at the cooking container when the preheater preheats the water, ions in the water can form precipitates in the preheating container, the precipitates are deposited and then fed into the cooking container, and therefore the efficiency, the safety and the durability of the cooking device can be improved.

Description

Technical Field

[0001] The utility model relates to the field of kitchenware, in particular to a cooking device. Background Art

[0002] When water is heated, calcium, magnesium and other ions dissolved in the water will turn into calcium carbonate, magnesium carbonate and other mineral salts that are insoluble or difficult to dissolve in water during the boiling process, commonly known as scale. Due to the low thermal conductivity of scale, scale adheres to the surface of the container and / or the heating element, which will reduce the efficiency of water heating. When there is too much scale on the surface of the heating element, it will also cause the heating element to dry burn and be damaged, which is unsafe.

[0003] Existing kitchen appliances, such as rice steamers, generally have a water tank and a heating pipe at the bottom of the rice steamer cabinet, and a steam chamber at the top of the cabinet. The heating pipe heats the water in the water tank to generate steam, which is then input into the steam chamber above to steam rice. The water tank surface and the heating pipe surface are prone to scaling, resulting in low efficiency of the rice steamer, and there is a risk of dry burning and damage to the heating pipe, which is poor in safety.

[0004] In addition, in kitchen appliances such as rice steamers, since the sink and the heater are generally fixed in the cooker and / or connected to many other structures, scale is generated in the cooking container or scale is formed on the heating tube, which is inconvenient to clean and maintain. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a cooking device in order to overcome the defect that scale is easily formed in the rice steaming cabinet in the prior art.

[0006] The utility model solves the above technical problems through the following technical solutions:

[0007] A cooking device comprises a cooker, the cooker comprises a cooking container, the cooking device further comprises a preheater arranged outside the cooking container, the preheater comprises a preheating container and a preheating heating element, the preheating heating element is used to heat water in the preheating container, and the preheating container is connected to the cooking container to supply water to the cooking container.

[0008] In the present technical solution, water is heated by a preheater and then fed into a cooking container to cook food. On the one hand, when the preheater is preheating the water, other operations can be performed at the cooking container, and then the preheated water is fed into the cooking container, thereby improving the efficiency and safety of cooking; on the other hand, because the preheater is arranged outside the cooking container, it is convenient to clean and maintain. When the water is preheated at the preheater, ions in the water can first form precipitates in the preheating container, thereby reducing or avoiding scaling of water entering the cooking container: if the cooking device is used to cook food, it can reduce or avoid scaling in the food, thereby improving the quality of cooking; scaling on the inner surface of the cooking container can be reduced or avoided, which is convenient for cleaning and maintenance of the cooking container, reducing the corrosion effect of scaling on the cooking container, and improving the durability of the cooking container and the safety of using the cooking container.

[0009] In addition, the preheater is arranged outside the cooking container and has only the function of boiling water. In order to improve the efficiency, durability and safety of cooking of the cooker, compared with replacing and maintaining the parts of the original cooker, adding a preheater on the basis of the cooker is convenient to operate and helps to reduce costs.

[0010] Preferably, the preheater is arranged outside the cooker, and / or the preheater and the cooker are detachably connected.

[0011] In the present solution, the preheater is arranged outside the cooker and / or the preheater and the cooker are detachably connected. On the one hand, the convenience of maintaining the cooker and the preheater can be improved. On the second hand, it is convenient to use the same or the same type of preheater for different cookers, thereby improving the versatility of the preheater, and it is also convenient to use the preheater separately for other purposes, thereby improving the utilization rate. On the third hand, it is convenient to add a preheater to the original cooker.

[0012] Preferably, the cooker further comprises a steam chamber, and the cooking device further comprises a steam transmission pipe, wherein the steam transmission pipe connects the preheating container and the steam chamber.

[0013] In this solution, the preheating container is connected to the steam chamber, and the steam generated when the preheater preheats the water can be transported to the steam chamber, thereby improving the efficiency of steaming food in the steam chamber.

[0014] Preferably, the steam delivery pipe is connected to the top of the preheating container;

[0015] And / or, the steam delivery pipe is detachably connected to the steam chamber and / or the preheating container.

[0016] In this solution, the steam delivery pipe is connected to the top of the preheating container, which can prevent water in the preheating container from flowing into the steam delivery pipe.

[0017] The steam delivery pipe is detachably connected to the steam chamber and / or the preheating container, so that the preheating container can be easily removed from under the steam chamber for maintenance.

[0018] Preferably, the cooking container and the preheating container are connected at the upper middle portion of the preheating container.

[0019] In the present technical solution, ions in the water form precipitates, which settle under the action of gravity. The precipitates in the upper and middle parts of the container are less than those in the lower part. The cooking container and the preheating container are connected at the upper and middle part of the preheating container, which can reduce or prevent the precipitates from entering the cooking container from the preheating container, further reducing or preventing the scaling of water entering the cooking container.

[0020] Preferably, the cooking device further comprises a transition container, the transition container is provided with a connecting inlet and a connecting outlet which are interconnected, the connecting inlet is used to communicate with the preheating container, and the connecting outlet is used to communicate with the cooking container.

[0021] In the present technical solution, a transition container is provided to temporarily store, buffer, and precipitate the water entering the cooking container from the preheating container.

[0022] Preferably, a filter element for filtering water is provided at the connection inlet and / or the connection outlet;

[0023] And / or, the connection outlet is arranged above the connection inlet.

[0024] In this solution, a filter is provided at the connection inlet and / or the connection outlet, which can reduce or prevent sediment from entering the cooking container from the preheating container, and further reduce or prevent scaling in the cooking container. When a filter is provided at the connection inlet, scaling in the transition container can be reduced or prevented.

[0025] Ions in the water form precipitates and settle under the action of gravity. The precipitates in the upper part of the container are less than those in the lower part. The connecting outlet is arranged above the connecting inlet, which can reduce or avoid the precipitates entering the cooking container from the transition container, further reducing or avoiding scaling in the cooking container.

[0026] Preferably, the connection inlet and the preheating container are detachably connected;

[0027] And / or, the connecting outlet and the cooking container are detachably connected.

[0028] In the present embodiment, the inlet is connected to the preheating container in a detachable manner, and / or the outlet is connected to the cooking container in a detachable manner, which facilitates the removal of the transition container from the cooking container and / or the preheating container, thereby improving the convenience of maintaining the cooking container, the preheating container, and the transition container separately.

[0029] Preferably, the cooker further comprises a cooking heating element disposed in the cooking container, wherein the cooking heating element is used to heat water in the cooking container;

[0030] And / or, the preheating heating element is arranged in the preheating container.

[0031] In this solution, the cooking heating element and / or the preheating heating element are arranged in the corresponding container, and the heating efficiency is high.

[0032] The cooking heating element is arranged in the cooking container to reduce or avoid water scaling in the cooking container, which can reduce or avoid scaling on the surface of the cooking heating element, reduce the influence of scaling on heat transfer and corrosion of the cooking heating element, and ensure the heating efficiency, safety and durability of the cooking heating element.

[0033] The positive and progressive effects of the utility model are:

[0034] The water is heated by the preheater and then sent into the cooking container to cook food. On the one hand, when the preheater is preheating the water, other operations can be performed at the cooking container, and then the preheated water is sent into the cooking container, thereby improving the efficiency and safety of cooking; on the other hand, because the preheater is arranged outside the cooking container, it is convenient to clean and maintain. When the water is preheated at the preheater, the ions in the water can first form precipitation in the preheating container, thereby reducing or avoiding the scaling of the water entering the cooking container: if the cooking device is used to cook food, it can reduce or avoid the mixing of scale in the food, thereby improving the quality of cooking; it can reduce or avoid the scaling of the inner surface of the cooking container, facilitate the cleaning and maintenance of the cooking container, reduce the corrosion effect of scale on the cooking container, and improve the durability of the cooking container and the safety of using the cooking container.

[0035] In addition, the preheater is arranged outside the cooking container and has only the function of boiling water. In order to improve the efficiency, durability and safety of cooking of the cooker, compared with replacing and maintaining the parts of the original cooker, adding a preheater on the basis of the cooker is convenient to operate and helps to reduce costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a schematic structural diagram of a cooking device according to an embodiment of the utility model;

[0037] Figure 2 This is a schematic structural diagram of a cooking device according to an embodiment of the utility model;

[0038] Figure 3 This is a schematic structural diagram of a preheater according to an embodiment of the utility model;

[0039] Figure 4 A cross-sectional view of a preheater according to an embodiment of the present utility model;

[0040] Figure 5 This is a schematic structural diagram of a connector according to an embodiment of the utility model;

[0041] Figure 6 This is a schematic diagram of the structure of a preheater and a connector according to an embodiment of the utility model;

[0042] Figure 7 A cross-sectional view of a preheater according to another embodiment of the present invention;

[0043] Figure 8 for Figure 7 Enlarged view of part A in the middle;

[0044] Fig. 9 This is a working principle diagram of a controller according to another embodiment of the present invention.

[0045] Description of reference numerals:

[0046] Cooking device 10000;

[0047] Cooker (rice steamer) 1;

[0048] Cabinet 11, placement slot 111, first steam hole 1111, steam inlet interface 112;

[0049] Cabinet door 12;

[0050] A cooking heating module 13, a cooking heating element 131, and a cooking container 132;

[0051] Steam chamber 14, tray 141, positioning rod 142;

[0052] Preheater (preheating cabinet) 2;

[0053] Preheating the heating module 21;

[0054] Preheating the heating element 211;

[0055] Preheating container 212, water inlet interface 2121, water outlet interface 2122, steam outlet interface 2123;

[0056] Blade 22, rotating shaft 23, bracket 24;

[0057] Sensor 26, intelligent control module 27, electric telescopic rod 281, rectangular block 282, cylindrical plug 283, warning light 29;

[0058] Connector 3;

[0059] A transition container 31, a connecting inlet 311, a connecting outlet 312, and a second steam hole 313;

[0060] Steam pipe 32 and water pipe 33. DETAILED DESCRIPTION

[0061] The preferred embodiments are given below and the present invention is described more clearly and completely in conjunction with the accompanying drawings.

[0062] It should be noted that the detachable connection can be achieved by means of, but not limited to, threaded connection, snap connection, plug-in connection, etc., and the non-detachable connection can be achieved by means of, but not limited to, welding, riveting, bonding, etc.

[0063] Example 1

[0064] This embodiment provides a cooking device. Figure 1-Figure 6 It is a structural schematic diagram of this embodiment.

[0065] like Figure 1 , the cooking device 10000 comprises:

[0066] The cooker 1 comprises a cooking and heating module 13, and the cooking and heating module comprises a cooking container 132;

[0067] The preheater 2 is a preheating cabinet, which is arranged outside the cooking container 132, and includes a preheating heating module 21. The preheating heating module 21 includes a preheating container 212 and a preheating heating element 211. The preheating heating element 211 is used to heat the water in the preheating container 212. The preheating container 212 is connected to the cooking container 132 to supply water to the cooking container 132.

[0068] The water is heated by the preheater 2 and then sent to the cooking container 132 to cook food. On the one hand, when the preheater 2 is preheating the water, other operations can be performed at the cooking container 132, and then the preheated water is sent to the cooking container 132, thereby improving the efficiency and safety of cooking; on the other hand, because the preheater 2 is arranged outside the cooking container 132, it is convenient to clean and maintain. When the water is preheated at the preheater 2, the ions in the water can first form precipitation in the preheating container 212, thereby reducing or avoiding the scaling of the water entering the cooking container 132: if the cooker 1 is used for cooking food, it can reduce or avoid the mixing of scale in the food, thereby improving the quality of cooking; it can reduce or avoid scaling on the inner surface of the cooking container 132, facilitate the cleaning and maintenance of the cooking container 132, reduce the corrosion effect of scale on the cooking container 132, and improve the durability of the cooking container 132 and the safety of using the cooking container.

[0069] In addition, the preheater 2 is arranged outside the cooking container 132 and has only the function of boiling water. In order to improve the efficiency, durability and safety of cooking of the cooker 1, compared with replacing and maintaining the parts of the original cooker 1, adding a preheater 2 on the basis of the cooker 1 is convenient to operate and helps to reduce costs.

[0070] like Figure 1In this embodiment, the preheater 2 is arranged outside the cooker 1, and the preheater 2 and the cooker 1 are detachably connected. On the one hand, it is convenient to maintain the cooker 1 and the preheater 2 separately. On the other hand, it is convenient to use the same or the same type of preheater 2 for different cookers 1, thereby improving the versatility of the preheater 2. It is also convenient to use the preheater 2 for other purposes, such as boiling water, thereby improving the utilization rate of the preheater 2. On the third hand, it is convenient to add the preheater 2 to the original cooker 1. In other embodiments, the preheater 2 can be arranged inside the cooker 1, so that the structure is compact. In other embodiments, the preheater 2 can be connected to the cooker 1 by non-detachable means, so that the connection is firm and reliable.

[0071] In this embodiment, the cooker 1 is specifically a rice steamer, which can also be called a rice steaming cabinet. The rice steaming cabinet includes a cabinet 11, a cabinet door 12 and a steam chamber 14; the steam chamber 14 is formed in the middle and upper part of the cabinet 11, and a positioning rod 142 is provided in the steam chamber 14 to place a tray 141 for holding rice; the lower part of the cabinet 11 is used to arrange a cooking heating module 13, and the cooking heating module also includes a cooking heating element 131. The cooking container 132 of the cooking heating module 13 is specifically a sink. The cooking heating element is arranged in the cooking container and is a heating pipe, which is used to heat the water in the cooking container to generate steam and send it to the steam chamber 14. In other embodiments, the cooker 1 can be a kitchen utensil for steaming or boiling, or can be a kitchen utensil with both steaming and boiling functions; when the cooker 1 has the function of steaming, the cooking container is used to hold water to generate steam; when the cooker has the function of boiling, the cooking container is used to hold water and boiled food.

[0072] like Figure 1 , Figure 5 , Figure 6 The cooking device further includes a connector 3, which includes a steam delivery pipe 32, which connects the preheating container 212 and the steam chamber 14. The steam generated by the preheater 2 when preheating water can be delivered to the steam chamber 14, thereby improving the efficiency of steaming food in the steam chamber 14. Specifically, Figure 6 The preheating container 212 is provided with a steam outlet interface 2123, such as Figure 2 The cabinet 11 is provided with a steam inlet interface 112 connected to the steam chamber 14. Figure 1 The two ends of the steam delivery pipe 32 are respectively connected to the steam outlet interface 2123 and the steam inlet interface 112 to connect the preheating container 212 and the steam chamber 14.

[0073] like Figure 3 The steam delivery pipe 32 is connected to the top of the preheating container 212 , which can prevent water in the preheating container 212 from flowing into the steam delivery pipe 32 .

[0074] In this embodiment, both ends of the steam delivery pipe 32 are detachably connected to the steam chamber 14 and the preheating container 212 , respectively. Specifically, the detachable connection is achieved through a threaded connecting pipe, which facilitates the removal of the preheating container 212 from the steam chamber 14 for maintenance.

[0075] In other embodiments, the steam delivery pipe 32 may be connected to a position above the water level of the preheating container 212 .

[0076] like Figure 1 , Figure 3 , Figure 6 The cooking container 132 and the preheating container 212 are connected at the middle and upper part of the preheating container 212. The ions in the water form precipitates, which settle under the action of gravity. The precipitates in the middle and upper part of the container are less than those in the lower part. The cooking container 132 and the preheating container 212 are connected at the middle and upper part of the preheating container 212, which can reduce or prevent the precipitates from entering the cooking container 132 from the preheating container 212, and further reduce or prevent the water entering the cooking container 132 from scaling.

[0077] like Figure 1 , Figure 5 , Figure 6 The connector 3 further includes a transition container 31, on which a connection inlet 311 and a connection outlet 312 are provided, the connection inlet 311 is used to communicate with the preheating container 212, and the connection outlet 312 is used to communicate with the cooking container 132. The provision of the transition container 31 can play the role of temporary storage, buffering, and precipitation of water entering the cooking container 132 from the preheating container 212.

[0078] Specifically, Figure 1 , Figure 2 The cabinet 11 is provided with a placement groove 111, and the transition container 31 is placed in the placement groove 111. Figure 3 , a water outlet interface 2122 is provided on the preheating container 212; Figure 1 , Figure 5 , Figure 6 The connector 3 further includes a water pipe 33, a water outlet interface 2122 of the preheating container 212, and the water pipe 33, the connection inlet 311 of the transition container 31, the connection outlet 312, and the cooking container 132 are sequentially connected. Since the placement groove 111 separates the cooking container 132 from the steam chamber 14, a first steam hole 1111 is provided on the placement groove 111, and a second steam hole 313 is provided on the transition container 31, so that the steam generated by the cooking container 132 enters the steam chamber 14 through the second steam hole 313 and the first steam hole 1111.

[0079] In this embodiment, the connection inlet 311 and the preheating container 212 are detachably connected, and the connection outlet 312 and the cooking container 132 are detachably connected, which facilitates the removal of the transition container 31 from the cooking container 132 and the preheating container 212, thereby improving the convenience of maintaining the cooking container 132, the preheating container 212, and the transition container 31 separately.

[0080] In other embodiments, the connection outlet 312 may be arranged above the connection inlet 311 to reduce or prevent sediment from entering the cooking container 132 from the transition container 31, further reducing or preventing scaling of water entering the cooking container 132. In other embodiments, a filter, such as a filter screen, may be provided at the connection inlet 311 and / or the connection outlet 312, and no filter may be provided. The provision of a filter may reduce or prevent sediment from entering the cooking container 132 from the preheating container 212, further reducing or preventing scaling in the cooking container 132. When a filter is provided at the connection inlet 311, scaling in the transition container 31 may be reduced or prevented. In other embodiments, the specific arrangement of the transition container 31 may be flexibly adjusted according to the structural forms of the cooker 1 and the preheater 2. In other embodiments, the cooking container and the preheating container may be directly connected by a pipeline, so that the structure is simple and the cost is low.

[0081] like Figure 3 , Figure 4 In this embodiment, the preheating heating element 211 is arranged in the preheating container 212, and is used to contact with the water in the preheating container 212 for heating, and the heating efficiency is high. In other embodiments, the cooking heating element 131 and / or the preheating heating element 211 can be arranged inside or outside the corresponding container; when the heating element is arranged inside the container, the heating efficiency is high, and the heating element can be, but not limited to, an electric heating tube or an electric heating sheet, etc.; when the heating element is arranged outside the container, it can avoid scaling of the heating element, and the heating element can be, but not limited to, an electric heating plate, an electric heating pad or a gas stove, etc.

[0082] like Figure 4 The preheater 2 in this embodiment is provided with a structure to prevent the preheating heating element 211 from scaling. Specifically, the preheating cabinet further includes a spiral blade 22, a rotating shaft 23 and a bracket 24 arranged in the preheating container 212. The rotating shaft 23 is rotatably arranged in the preheating container 212, the blade 22 is fixed on the upper part of the rotating shaft 23, and the preheating heating element 211 is connected to the rotating shaft 23 through the bracket 24. When the water in the preheating container 212 is heated to generate steam, the blade 22 can be driven to rotate relative to the preheating container 212, thereby driving the preheating heating element 211 on the rotating shaft 23 to rotate relative to the preheating container 212, so as to reduce or avoid the scale in the preheating container 212 from being deposited on the preheating heating element 211, and ensure the heating efficiency of the preheating heating element 211.

[0083] Example 2

[0084] Figure 7-Figure 9 It is a schematic diagram of the structure of this embodiment.

[0085] The structures of the cooking device 1, the connector 3 and the preheating container 212 in this embodiment are the same as those in the first embodiment, except for the structural arrangement corresponding to the preheating heating element 211 and the scaling prevention element 211.

[0086] like Figure 7 The preheating heating element 211 is fixed at the bottom of the preheating container 212. A spiral blade 22 is provided in the preheating container 212. The blade 22 is arranged on the upper part of the rotating shaft 23. The rotating shaft 23 is rotatably arranged at the bottom of the preheating container 212. The rotating shaft 23 is hollow and has a groove. It is sleeved on the outside of the preheating heating element 211. A scraper is provided on the inside of the rotating shaft 23 as a descaling element. When the water in the preheating container 212 is heated to generate steam, the blade 22 can be driven to rotate relative to the preheating container 212, thereby driving the scraper on the rotating shaft 23 to rotate relative to the preheating heating element 211, and scraping the surface of the preheating heating element 211 to reduce or avoid the scale in the preheating container 212 from being deposited on the preheating heating element 211, thereby ensuring the heating efficiency of the preheating heating element 211.

[0087] In other embodiments, the preheating heating element 211 can be set in a spiral shape and rotatably set in the preheating container 212. The water in the preheating container 212 boils to drive the preheating heating element 211 to rotate relative to the preheating container 212, so as to reduce or avoid the deposition of scale in the preheating container 212 on the preheating heating element 211, thereby ensuring the heating efficiency of the preheating heating element 211. An adapter can be used to ensure conductive heating when the preheating heating element 211 rotates.

[0088] like Figure 8 The preheating container 212 is provided with a water inlet interface 2121, and the preheater 2 further includes an electric telescopic rod 281, a rectangular block 282 and a cylindrical plug 283. The electric telescopic rod 281 drives the cylindrical plug 283 on the rectangular block 282 to move so as to open or close the water inlet interface 2121. In other embodiments, water can be added to the preheating container 212 manually; a manual switch valve or an automatic switch valve such as a solenoid valve can be provided at the water inlet interface 2121 to control the water inlet of the preheating container 212; a control valve can be provided at the steam delivery pipe 32 of the connector 3 or the water outlet interface 2122 of the preheating container 212 to control the steam of the preheating container 212 to enter the steam chamber 14 or the water to enter the cooking container 132.

[0089] like Figure 8 The preheater 2 also includes a sensor 26, an intelligent control module 27 and a warning light 29. The sensor 26 is used to detect the water level in the preheating container 212. When the water level is insufficient, the warning light 29 lights up to remind the user. Fig. 9The water level information detected by the sensor 26 is sent to the information receiving module of the intelligent control module 27, and then the information is transmitted to the data analysis module through the output end of the information receiving module, and the water level difference inside the preheating container 212 is calculated by the data analysis module, and then the data is transmitted to the control panel through the output end of the data analysis module, and the command is issued to the command output module through the control panel, and the command is transmitted to the electric telescopic rod 281 and the warning light 29 through the output end of the command output module. The specific structure and working principle of the intelligent control module 27 can refer to the prior art. The notch on one side of the intelligent control module 27 of the preheating container 212 is used to install glass, so as to observe the water level in the preheating container 212.

[0090] The temperature at which the preheater 2 preheats the water in the preheating container 212 can be flexibly set according to specific needs. For example, the water in the preheating container 212 can be heated to boiling or to a temperature below the boiling point before being sent to the cooking container 132. In other embodiments, a temperature sensor 26 can be provided to detect the water temperature in the preheating container 212. In other embodiments, when a control valve is provided, the opening and closing of the control valve can be controlled by the intelligent control module 27.

[0091] The sensor 26, intelligent control module 27, warning light 29, and electric telescopic rod 281 in embodiment 1 are the same as those in this embodiment.

[0092] Although the specific implementations of the utility model are described above, those skilled in the art should understand that this is only an example, and the protection scope of the utility model is defined by the attached claims. Those skilled in the art can make various changes or modifications to these implementations without departing from the principle and essence of the utility model, but these changes and modifications fall within the protection scope of the utility model.

Claims

1. A cooking device, characterized in that: The cooking device comprises a cooker, which comprises a cooking container. The cooking device further comprises a preheater arranged outside the cooking container, the preheater comprises a preheating container and a preheating heating element, the preheating heating element is used to heat water in the preheating container, and the preheating container is connected to the cooking container to supply water to the cooking container.

2. The cooking device according to claim 1, characterized in that: The preheater is arranged outside the cooker, and / or the preheater and the cooker are detachably connected.

3. The cooking device according to claim 1, characterized in that: The cooker further comprises a steam chamber, and the cooking device further comprises a steam delivery pipe, wherein the steam delivery pipe is connected with the preheating container and the steam chamber.

4. The cooking device according to claim 3, characterized in that: The steam delivery pipe is connected to the top of the preheating container; And / or, the steam delivery pipe is detachably connected to the steam chamber and / or the preheating container.

5. The cooking device according to claim 1, characterized in that: The cooking container and the preheating container are communicated at the upper middle portion of the preheating container.

6. The cooking device according to claim 1, characterized in that: The cooking device further comprises a transition container, on which a connecting inlet and a connecting outlet are provided which are interconnected, wherein the connecting inlet is used to communicate with the preheating container, and the connecting outlet is used to communicate with the cooking container.

7. The cooking device according to claim 6, characterized in that: A filter element for filtering water is provided at the connection inlet and / or the connection outlet; And / or, the connection outlet is arranged above the connection inlet.

8. The cooking device according to claim 6, characterized in that: The connection inlet and the preheating container are detachably connected; And / or, the connecting outlet and the cooking container are detachably connected.

9. The cooking device according to claim 1, characterized in that: The cooker further comprises a cooking heating element disposed in the cooking container, wherein the cooking heating element is used for heating water in the cooking container.

10. The cooking device according to claim 1, characterized in that: The preheating heating element is arranged in the preheating container.

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