Cooking equipment
By designing a cooking device that integrates steamer and rice cooker functions, the problem of low kitchen space utilization is solved, and the functions of food steaming, rice storage and automatic rice cooking are realized, which improves cooking efficiency and intelligent equipment.
Patent Information
- Application Number
- CN202420161779.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-23
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-01-23
AI Technical Summary
In existing kitchens, rice cookers and steamers are usually used to steam food and cook rice separately, resulting in low kitchen space utilization.
A cooking equipment with integrated steamer and rice cooker functions is designed, including cooking components, storage components and water source components, which are capable of steaming food, storing rice, automatic adding rice, automatic washing and automatic cooking of rice.
The device integrates the functions of the steamer and rice cooker, saving countertop space and improving the taste of the rice cooker and the intelligence of the cooking equipment.
Smart Images
Figure CN222443813U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of kitchen appliances, and in particular to cooking equipment. Background Art
[0002] As cooking appliances become more and more abundant, each appliance needs to occupy a separate space in the kitchen. For example, currently, rice and other foods are usually cooked using electric rice cookers and steamers respectively. In particular, families often install built-in steamers in cabinets, place desktop electric rice cookers on the kitchen countertop, and place rice boxes on the bottom or countertop of the kitchen. These three kitchen appliances occupy a lot of kitchen space, resulting in low kitchen space utilization. Summary of the invention
[0003] Based on this, it is necessary to provide a cooking device to solve the problem that a steamer and an electric rice cooker respectively realize the functions of steaming other foods and steaming rice, but require many kitchen devices and occupy a large space.
[0004] A cooking device, comprising a cooking component, a storage component and a water source component. The cooking component comprises a pot body and a heating element acting on the pot body, the pot body comprising a cooking space with an open top. The storage component comprises a storage box and a switchable rice inlet pipe, the storage box is provided with a storage space inside, one end of the rice inlet pipe is connected to the storage space, and the other end is connected to the cooking space. The water source component comprises a clean water tank and a switchable water inlet pipe, the clean water tank is provided with a first water storage space inside, one end of the water inlet pipe is connected to the first water storage space, and the other end is connected to the cooking space. The drainage component comprises a sewage tank and a switchable drainage pipe, the sewage tank is provided with a second water storage space inside, one end of the drainage pipe is connected to the second water storage space, and the other end is connected to the cooking space.
[0005] In one embodiment, the cooking device includes a main body and a door body slidably connected to the main body, the main body is provided with a accommodating space and the door body covers the main body, the cooking component, the storage component, the water source component and the drainage component are all located in the accommodating space and are all connected to the door body.
[0006] In one embodiment, the pot body includes a steaming part and a boiling part which are connected and distributed up and down, and the steaming part is located above the boiling part. The cooking device also includes a steaming rack which is detachably placed in the cooking space and opposite to the steaming part.
[0007] In one embodiment, the inner diameter of the steaming portion is larger than the inner diameter of the cooking portion, so as to form a support surface at the connection between the steaming portion and the cooking portion, and the steaming grid abuts against the support surface.
[0008] In one embodiment, the steaming portion is a hollow prism structure, and the steaming grid is a prism structure adapted to the steaming portion.
[0009] In one embodiment, the potting portion is a hollow prism structure, or the potting portion is a hollow cylindrical structure.
[0010] In one of the embodiments, the main body is further provided with a steaming space separated from the accommodating space, and the cooking device further includes a steaming plate located in the steaming space, a heating element acting on the steaming space, and a steaming water tank connected to the steaming space.
[0011] In one embodiment, the storage assembly also includes a suction fan and a first valve body located in the rice inlet pipe, the suction fan acts in the rice inlet pipe and provides power to move from the storage space to the cooking space, and the first valve body is arranged on the rice inlet pipe to control the opening and closing of the rice inlet pipe.
[0012] In one embodiment, the water source component also includes a pump body and a second valve body located in the water inlet pipe, the pump body acts in the water inlet pipe and provides power for water to flow from the first water storage space to the cooking space, and the second valve body is arranged on the water inlet pipe to control the on and off of the water inlet pipe.
[0013] In one of the embodiments, the drainage assembly further includes a third valve body, and the third valve body is disposed on the drainage pipe to control the on / off of the drainage pipe.
[0014] In one of the embodiments, the pot body is provided with a drain port connected to the drain pipe, and the drain port is located at the bottom end of the side wall of the pot body and penetrates the side wall.
[0015] In one embodiment, one end of the drain pipe connected to the cooking space is telescopically disposed at the top of the cooking space, and the drain pipe is controlled by the third valve body. When the drain pipe is extended, the drain pipe is connected to the bottom of the cooking space.
[0016] The cooking device provided in the above scheme integrates the functions of a steamer and an electric rice cooker, saving the placement space of a desktop electric rice cooker and a rice box, and can realize the functions of food steaming, rice box rice storage, automatic rice adding, automatic rice washing, and automatic rice cooking. It is suitable for making an appointment to cook rice in advance, and there is no need to soak the rice in clean water for a long time. It only needs to automatically add rice and wash the rice when the time comes, and then cook the rice, thereby improving the taste of the cooked rice and the intelligence level of the cooking device. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram of the structure of a cooking device in one embodiment of the present application.
[0018] Figure 2 for Figure 1 Side view of cooking equipment.
[0019] Figure 3 This is a schematic diagram of the structure of a cooking device in another embodiment of the present application.
[0020] Figure 4 for Figure 3 Schematic diagram of the AA section.
[0021] Figure 5 This is a schematic diagram of the structure of a cooking device in another embodiment of the present application.
[0022] Description of reference numerals:
[0023] 100, cooking equipment; 110, cooking assembly; 111, pot body; 1111, cooking space; 1112, steaming part; 1113, boiling part; 1114, support surface; 112, heating element; 120, storage assembly; 121, storage box; 1211, storage space; 122, rice inlet pipe; 123, suction fan; 124, first valve body; 130, water source assembly; 131, clean water tank; 1311, first water storage space; 132 , water inlet pipe; 133, pump body; 134, second valve body; 140, drainage assembly; 141, sewage tank; 1411, second water storage space; 142, drainage pipe; 143, third valve body; 150, main body; 151, accommodating space; 152, steaming space; 160, door body; 170, steaming grid; 180, steaming module; 181, steaming plate; 182, heating element; 183, steaming water tank; 184, power board; 190, lintel. DETAILED DESCRIPTION
[0024] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.
[0025] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.
[0026] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0027] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.
[0028] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0029] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If 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. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.
[0030] See also Figure 1 and Figure 2 , Figure 1 and Figure 2 A structural schematic diagram of a cooking device 100 in an embodiment of the present application is shown. An embodiment of the present application provides a cooking device 100, and the cooking device 100 includes a cooking component 110, a storage component 120 and a water source component 130.
[0031] In one embodiment, the cooking device 100 includes a main body 150 and a door body 160 slidably connected to the main body 150. The main body 150 is provided with a receiving space 151 and the door body 160 covers the main body 150, that is, the door body 160 is a pull-out type, and the door body 160 and the main body 150 slide relative to each other through a slide rail. The cooking component 110, the storage component 120, the water source component 130 and the drainage component 140 are all located in the receiving space 151 and are all connected to the door body 160, so as to move with the door body 160 relative to the main body 150, so as to add water, add grain and drain water when moving out of the receiving space 151.
[0032] like Figure 2 As shown, the cooking device 100 further includes a door lintel 190 connected to the main body 150 and located above the door body 160 . The door lintel 190 is used to install a display and control module to display the working status of the cooking device 100 and control the cooking device 100 .
[0033] Among them, Figure 1 As shown, the cooking assembly 110 includes a pot body 111 and a heating element 112 acting on the pot body 111. Figure 1 As shown, in this embodiment, the heating element 112 is located below the pot body 111, and optionally, the heating element 112 includes a power control board and an electromagnetic wire coil to achieve a uniform heating function. Figure 1 As shown, the pot body 111 includes a cooking space 1111 with an open top, and the cooking space 1111 is used for cooking rice and steaming ingredients.
[0034] like Figure 1As shown, the storage component 120 includes a storage box 121 and a switchable rice inlet pipe 122. The storage box 121 is provided with a storage space 1211 inside for storing food ingredients. Exemplarily, rice is stored in the storage space 1211, and one end of the rice inlet pipe 122 is connected to the storage space 1211, and the other end is connected to the cooking space 1111, for transporting the rice in the storage space 1211 to the cooking space 1111 in the pot body 111.
[0035] like Figure 1 As shown, in one embodiment, the storage assembly 120 further includes a suction fan 123 and a first valve body 124 located in the rice inlet tube 122, the suction fan 123 acts on the food in the rice inlet tube 122 and provides power for the food to move from the storage space 1211 to the cooking space 1111, and the first valve body 124 is provided and acts on the rice inlet tube 122 to control the opening and closing of the rice inlet tube 122. When it is necessary to cook rice, the suction fan 123 is turned on and the rice is transported from the storage space 1211 to the cooking space 1111 in the pot body 111 through the rice inlet tube 122.
[0036] like Figure 1 As shown, the water source component 130 includes a clean water tank 131 and a switchable water inlet pipe 132. The clean water tank 131 is provided with a first water storage space 1311 inside for storing clean water. One end of the water inlet pipe 132 is connected to the first water storage space 1311, and the other end is connected to the cooking space 1111, which is used to transport the clean water in the first water storage space 1311 to the cooking space 1111 of the pot body 111.
[0037] like Figure 1 As shown, in one embodiment, the water source component 130 also includes a pump body 133 and a second valve body 134 located in the water inlet pipe 132. The pump body 133 acts in the water inlet pipe 132 and provides power for the water to flow from the first water storage space 1311 to the cooking space 1111. The second valve body 134 is arranged and acts on the water inlet pipe 132 to control the on and off of the water inlet pipe 132.
[0038] When it is necessary to cook rice, the pump body 133 is turned on to transport the clean water in the first water storage space 1311 from the first water storage space 1311 to the cooking space 1111 in the pot body 111 through the water inlet pipe 132, so as to wash the rice transported from the storage box 121 to the pot body 111, and then discharge the sewage through the drainage component 140. Then the pump body 133 is turned on again to transport the clean water in the first water storage space 1311 through the water inlet pipe 132 to the cooking space 1111 in the pot body 111, and it is heated by the heating element 112 together with the washed rice, thereby realizing the function of automatically washing rice and cooking rice after draining.
[0039] When it is necessary to steam other foods, the pump body 133 is turned on to transport the clean water in the first water storage space 1311 from the first water storage space 1311 to the cooking space 1111 in the pot body 111 through the water inlet pipe 132, and then the heating element 112 heats the pot body 111, and the clean water in the pot body 111 is heated and evaporated, thereby achieving steaming of other foods.
[0040] like Figure 1 As shown, the drainage component 140 includes a sewage tank 141 and a switchable drainage pipe 142. A second water storage space 1411 is provided inside the sewage tank 141. One end of the drainage pipe 142 is connected to the second water storage space 1411, and the other end is connected to the cooking space 1111, which is used to discharge the sewage in the cooking space 1111 through the drainage pipe 142 to the sewage tank 141 for storage.
[0041] like Figure 1 As shown, in one embodiment, the drainage assembly 140 further includes a third valve body 143, which is disposed and acts on the drainage pipe 142 to control the on / off of the drainage pipe 142. When the third valve body 143 is opened, the drainage pipe 142 is on, and when the third valve body 143 is closed, the drainage pipe 142 is blocked. Before cooking rice, the sewage generated by washing the rice is discharged from the cooking space 1111 through the drainage pipe 142 to the sewage tank 141 for storage.
[0042] like Figure 1 As shown, in one embodiment, the pot body 111 is provided with a drain outlet connected to the drain pipe 142, and the drain outlet is located at the bottom end of the side wall of the pot body 111 and penetrates the side wall, so that the sewage in the pot body 111 can flow out from the drain outlet at the bottom when there is no other power.
[0043] like Figure 1 As shown, in one embodiment, the pot body 111 includes a steaming portion 1112 and a boiling portion 1113 which are connected and distributed up and down, the steaming portion 1112 is located above the boiling portion 1113, the cooking device 100 also includes a steaming rack 170, the steaming rack 170 is detachably placed in the cooking space 1111 and is opposite to the steaming portion 1112, when other food needs to be steamed, the food is placed on the steaming rack 170, the steaming rack 170 is placed in the cooking space 1111, the clean water in the first water storage space 1311 is transported from the first water storage space 1311 to the cooking space 1111 in the pot body 111 through the water inlet pipe 132, the rear heating element 112 heats the pot body 111, and the clean water in the boiling portion 1113 of the pot body 111 is heated and evaporated, thereby steaming the food located on the steaming rack 170.
[0044] like Figure 1As shown, in one embodiment, the inner diameter of the steaming portion 1112 is larger than the inner diameter of the boiling portion 1113, so that a support surface 1114 is formed at the connection between the steaming portion 1112 and the boiling portion 1113, and the steaming rack 170 is abutted against the support surface 1114. The steaming rack 170 is supported on the support surface 1114 so that the water vapor generated by the heated clean water in the bottom boiling portion 1113 can steam the food on the steaming rack 170.
[0045] like Figure 1 As shown, in one embodiment, the steaming portion 1112 is a hollow prism structure, and the steaming grid 170 is a prism structure adapted to the steaming portion 1112. Figure 1 In the illustrated embodiment, the steaming portion 1112 and the steaming rack 170 are both rectangular prism structures, so that long strips of food, such as fish, can be placed in the steaming rack 170 .
[0046] like Figure 1 As shown, in one embodiment, the cooking portion 1113 is a hollow prism structure. Figure 1 In the illustrated embodiment, the cooking portion 1113 and the steaming portion 1112 have the same structure and are an integrated structure, and both are rectangular prism structures to facilitate production.
[0047] Combination Figure 3 and Figure 4 As shown, Figure 3 and Figure 4 A schematic diagram of the structure of a cooking device 100 in another embodiment of the present invention is shown. Figure 1 and Figure 2 The difference between the cooking device 100 in the illustrated embodiment is that in one embodiment, the cooking portion 1113 is a hollow cylindrical structure. Figure 3 As shown, the steaming part 1112 is a rectangular prism structure, and the cooking part 1113 is a hollow cylindrical structure. In this case, the steaming part 1112 and the cooking part 1113 can be separate structures. After the rice is cooked, only the small and light cooking part 1113 needs to be taken out to serve the rice or clean it. The steaming rack 170 and the steaming part 1112 are still square, and the cooking part 1113 with a cylindrical structure is more in line with the inherent impression of the cooking pot, and there is no dead corner for cleaning compared to the square structure.
[0048] The cooking device 100 provided in the above solution, when in use:
[0049] Rice cooker function: remove the steaming rack 170, turn on the pump body 133 to transport the clean water in the first water storage space 1311 from the first water storage space 1311 to the cooking space 1111 in the pot body 111 through the water inlet pipe 132, so as to wash the rice transported from the storage box 121 to the pot body 111, and then discharge the sewage through the drainage assembly 140, and then turn on the pump body 133 again to transport the clean water in the first water storage space 1311 through the water inlet pipe 132 to the cooking space 1111 in the pot body 111, and it is heated by the heating element 112 together with the washed rice, thereby realizing the function of automatically washing rice and cooking rice after draining.
[0050] Steaming function: the steaming rack 170 is placed on the supporting surface 1114, the pump body 133 is turned on to transport the clean water in the first water storage space 1311 from the first water storage space 1311 to the cooking space 1111 in the pot body 111 through the water inlet pipe 132, and the rear heating element 112 heats the pot body 111, and the clean water in the pot body 111 is heated and evaporated, thereby realizing the steaming function.
[0051] Steamer function: the pump body 133 is turned on to transport the clean water in the first water storage space 1311 from the first water storage space 1311 to the cooking space 1111 in the pot body 111 through the water inlet pipe 132, so as to wash the rice transported from the storage box 121 to the pot body 111, and then the sewage is discharged through the drainage component 140. Then the pump body 133 is turned on again to transport the clean water in the first water storage space 1311 to the cooking space 1111 in the pot body 111 through the water inlet pipe 132, and then the steaming plate 181 and the steamed ingredients are manually placed, and the heating element 112 is heated to perform steaming in the rice cooker.
[0052] Combination Figure 5 As shown, Figure 5 A schematic diagram of the structure of a cooking device 100 in another embodiment of the present application is shown. Figure 1 and Figure 2 The cooking device 100 in the illustrated embodiment differs in that:
[0053] like Figure 5 As shown, in one embodiment, the main body 150 is further provided with a steaming space 152 which is separated from and arranged side by side with the accommodating space 151. Figure 5As shown, the accommodation space 151 in the main body 150 is used to realize the function of cooking rice, and the steaming space 152 is used to realize the function of steaming other foods. The cooking device 100 also includes a steaming module 180, which includes a steaming plate 181 located in the steaming space 152, a heating element 182 acting on the steaming space 152, and a steaming water tank 183 connected to the steaming space 152, and also includes a power board 184 located at the top of the steaming space 152, and the power board 184 controls the heating element 182 to heat and evaporate the water from the steaming water tank 183 in the steaming space 152, so as to steam the food in the steaming plate 181.
[0054] like Figure 5 As shown, in one embodiment, one end of the drain pipe 142 connected to the cooking space 1111 is telescopically disposed at the top of the cooking space 1111, and the drain pipe 142 is controlled by the third valve body 143. When the drain pipe 142 is extended, the drain pipe 142 is connected to the bottom end of the cooking space 1111. When sewage needs to be discharged, the drain pipe 142 is extended to suck out the sewage in the cooking space 1111, and the drain pipe 142 is contracted at other times.
[0055] The cooking device 100 provided in the above scheme integrates the functions of a steamer and an electric rice cooker, saving the placement space of a desktop electric rice cooker and a rice box, and can realize the functions of food steaming, rice box rice storage, automatic rice adding, automatic rice washing, and automatic rice cooking. It is suitable for making an appointment to cook rice in advance, and there is no need to soak the rice in clean water for a long time. It only needs to automatically add rice and wash the rice before cooking at the time, thereby improving the taste of the cooked rice and the intelligence level of the cooking device 100.
[0056] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0057] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.
Claims
1. A cooking device, characterized in that: The cooking device comprises: A cooking assembly, comprising a pot body and a heating element acting on the pot body, wherein the pot body comprises a cooking space with an open top; A storage component, the storage component comprising a storage box and a switchable rice inlet pipe, the storage box having a storage space inside, one end of the rice inlet pipe being connected to the storage space, and the other end being connected to the cooking space; A water source assembly, comprising a clean water tank and a switchable water inlet pipe, wherein a first water storage space is provided inside the clean water tank, one end of the water inlet pipe is connected to the first water storage space, and the other end of the water inlet pipe is connected to the cooking space; The drainage assembly comprises a sewage tank and a switchable drainage pipe, wherein a second water storage space is arranged inside the sewage tank, one end of the drainage pipe is connected to the second water storage space, and the other end is connected to the cooking space.
2. The cooking device according to claim 1, characterized in that: The cooking device includes a main body and a door body slidably connected to the main body, the main body is provided with a storage space and the door body covers the main body, the cooking component, the storage component, the water source component and the drainage component are all located in the storage space and are connected to the door body.
3. The cooking device according to claim 1, characterized in that: The pot body comprises a steaming part and a boiling part which are connected and distributed up and down, wherein the steaming part is located above the boiling part, and the cooking device further comprises a steaming rack which is detachably placed in the cooking space and is opposite to the steaming part.
4. The cooking device according to claim 3, characterized in that: The inner diameter of the steaming part is larger than the inner diameter of the cooking part, so as to form a supporting surface at the connection between the steaming part and the cooking part, and the steaming grid abuts against the supporting surface.
5. The cooking device according to claim 3, characterized in that: The steaming portion is a hollow prism structure, and the steaming grid is a prism structure adapted to the steaming portion.
6. The cooking device according to claim 5, characterized in that The potting portion is a hollow prism structure, or the potting portion is a hollow cylindrical structure.
7. The cooking device according to claim 2, characterized in that: The main body is also provided with a steaming space separated from the accommodating space, and the cooking device also includes a steaming plate located in the steaming space, a heating element acting on the steaming space, and a steaming water tank connected to the steaming space.
8. The cooking device according to claim 1, characterized in that The storage assembly also includes a suction fan and a first valve body located in the rice inlet pipe. The suction fan acts in the rice inlet pipe and provides power to move from the storage space to the cooking space. The first valve body is arranged on the rice inlet pipe to control the opening and closing of the rice inlet pipe.
9. The cooking device according to claim 1, characterized in that: The water source assembly also includes a pump body and a second valve body located in the water inlet pipe. The pump body acts in the water inlet pipe and provides power for water to flow from the first water storage space to the cooking space. The second valve body is arranged on the water inlet pipe to control the on and off of the water inlet pipe.
10. The cooking device according to claim 1, characterized in that The drainage component also includes a third valve body, which is arranged on the drainage pipe and is used to control the on and off of the drainage pipe.
11. The cooking device according to claim 10, characterized in that The pot body is provided with a drain port communicated with the drain pipe, and the drain port is located at the bottom end of the side wall of the pot body and penetrates the side wall.
12. The cooking device according to claim 10, characterized in that One end of the drain pipe connected to the cooking space is telescopically arranged at the top of the cooking space, and the drain pipe is controlled by the third valve body. When the drain pipe is extended, the drain pipe is connected to the bottom end of the cooking space.