Inner container and cooking equipment with steaming function
By setting a regular hexagonal pressed and recessed space on the bottom wall of the inner pot, the flow of condensate and heat distribution are optimized, solving the problem of insufficient strength of the bottom wall of the inner pot in steam cooking equipment, and improving the service life of the equipment and the user experience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO FOTILE KITCHEN WARE CO LTD
- Filing Date
- 2025-02-24
- Publication Date
- 2026-04-24
AI Technical Summary
In cooking appliances with steaming functions, the bottom wall of the inner pot, where the steam generator is located outside the inner pot, has relatively low strength, resulting in frequent thermal deformation, poor user experience, and short service life.
Multiple hexagonal moldings are evenly distributed on the bottom wall of the inner liner, and combined with the recessed space design in the central area of the inner liner, the flow of condensate and heat distribution are optimized.
It enhances the strength of the inner pot's bottom wall, reduces thermal deformation and material fatigue, improves user experience, extends service life, and increases cooking efficiency.
Smart Images
Figure CN224155474U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of kitchenware technology, and in particular to the inner pot and cooking equipment with steaming function. Background Technology
[0002] Cooking appliances with steaming functions (such as steam ovens, steam ovens, and microwave-steam-grill combos) include an inner pot and a steam generator. When cooking, food is placed in the inner pot, and the steam generator produces high-temperature steam to heat the food and cook it.
[0003] In some cooking appliances with steaming functions, the steam generator is located on the bottom wall of the inner pot. In other cooking appliances with steaming functions, the steam generator is located outside the inner pot but is connected to it.
[0004] In cooking appliances with steaming functions where the steam generator is located outside the inner pot, the bottom wall of the inner pot is a single piece of plate that is large in length and width but relatively thin, resulting in low strength. A heating element is typically located near the bottom wall of the inner pot. The heat generated by this element conducts heat to the steam inside the inner pot, producing superheated steam, which improves cooking efficiency and results. However, condensation produced during cooking can be unevenly distributed on the bottom wall, leading to uneven heating. Due to the low strength of the inner pot bottom wall, it can undergo significant thermal deformation when heated unevenly, producing a loud bang. On one hand, frequent and significant thermal deformation of the inner pot bottom wall accelerates material fatigue and shortens its lifespan. On the other hand, the bang sound can be frightening and unsafe for users, significantly reducing their experience. Therefore, it is necessary to improve the strength of the inner pot bottom wall. Utility Model Content
[0005] Therefore, it is necessary to provide a cooking appliance with an inner pot and a steaming function to address the above problems.
[0006] To address the above problems, this application provides the following technical solution:
[0007] An inner liner, the inner liner having an inner liner bottom wall, on which a plurality of identical pressed patterns are evenly spaced, the pressed patterns being regular hexagonal.
[0008] The inner liner has at least the following beneficial effects:
[0009] The uniformly spaced, hexagonal moldings on the bottom wall of the inner liner enhance its strength and reduce stress, preventing a bang caused by thermal deformation under heat. This limits thermal deformation, reduces material fatigue, and extends the liner's lifespan. Furthermore, it prevents the user from hearing a bang, reducing insecurity and improving the overall user experience.
[0010] In one embodiment, each of the moldings extends downward from the top side of the bottom wall of the inner liner.
[0011] This design ensures that condensation produced during cooking flows under gravity to the bottom wall of the inner pot and enters the various molds. Because the molds are identical and evenly distributed on the bottom wall, the condensation is also roughly evenly distributed, promoting uniform heating of the inner pot and preventing excessive thermal deformation that could produce a loud bang. On one hand, this helps limit thermal deformation of the inner pot bottom wall, reducing material fatigue and extending its lifespan. On the other hand, it prevents users from hearing a bang, reducing any sense of insecurity and improving the user experience.
[0012] Furthermore, each molded section accumulates condensate, which absorbs heat transferred to the bottom wall of the inner liner. This keeps the temperature near each molded section relatively low. With the molded sections evenly distributed across the bottom wall, localized overheating is less likely, preventing excessive thermal deformation that could cause a loud bang. On one hand, this limits thermal deformation of the inner liner bottom wall, reducing material fatigue and extending its lifespan. On the other hand, it prevents users from hearing a loud bang, reducing any sense of insecurity and improving the user experience.
[0013] In one embodiment, the volume of each die is V, and the depth of each die is h, wherein V and h satisfy: 300 mm 3 ≤V≤500mm 3 , 2.5mm≤h≤3.5mm.
[0014] This design ensures that each mold can hold an appropriate amount of condensate.
[0015] In one embodiment, the central region of the bottom wall of the inner liner is recessed downward to form a recessed space, and the molding is disposed on the bottom wall of the recessed space.
[0016] This design facilitates the flow of condensate into the molding die. Specifically, under the influence of gravity, the condensate first flows into the recessed space and then into the molding die.
[0017] In one embodiment, the sidewall of the recessed space extends obliquely upward from the bottom wall of the recessed space.
[0018] This design allows the sidewalls of the recessed space to guide condensate into the recessed space, which is beneficial for the condensate to flow into the molding process.
[0019] In one embodiment, the inner liner has an inner liner sidewall, and the inner liner sidewall and the inner liner bottom wall have a rounded transition.
[0020] This design allows condensate to flow to the bottom wall of the inner liner under gravity, which in turn facilitates the flow of condensate into the molding process.
[0021] This application also provides a cooking device with a steaming function, the cooking device with a steaming function comprising:
[0022] The aforementioned inner liner;
[0023] An external steam generator is located outside the inner liner and communicates with the inner liner; and
[0024] The heating element is located below and close to the bottom wall of the inner liner.
[0025] This cooking appliance with steaming function has at least the following beneficial effects:
[0026] In this steaming cooking appliance, multiple identical hexagonal pressed sections evenly spaced on the bottom wall of the inner pot enhance its strength and reduce stress, preventing a banging sound caused by thermal deformation during heating element operation. This helps limit thermal deformation, reducing material fatigue and extending the pot's lifespan. Furthermore, it prevents the user from hearing a bang, reducing insecurity and improving the overall user experience.
[0027] In one embodiment, the portion of the heating element that heats up after being energized is located directly below the bottom wall of the inner liner.
[0028] This design allows as much of the heat generated by the heating element after it is powered on to be transferred to the inner pot through the bottom wall, which improves the utilization rate of the heat generated by the heating element and helps to heat the steam in the inner pot to produce superheated steam, thereby improving cooking efficiency and cooking effect. It also helps to evaporate the condensate on the bottom wall of the inner pot into steam, preventing excessive condensate from accumulating on the bottom wall of the inner pot.
[0029] In one embodiment, the central region of the bottom wall of the inner liner is recessed downward to form a recessed space, and the molding extends downward from the top side of the bottom wall of the recessed space; the portion of the heating tube that heats up after being energized is located directly below the bottom wall of the recessed space.
[0030] This design serves two purposes. First, it maximizes the heat generated by the heating element when powered on, allowing it to be transferred into the inner pot through the bottom wall. This improves the utilization rate of the heat generated by the heating element and facilitates the heating of steam within the inner pot to produce superheated steam, thereby enhancing cooking efficiency and results. It also helps evaporate condensation on the bottom wall of the inner pot, preventing excessive condensation buildup. Second, it concentrates the heat generated by the heating element on areas with more condensation on the bottom wall of the inner pot (i.e., the recessed spaces), preventing dry burning in areas with less condensation (i.e., the areas outside the recessed spaces).
[0031] In one embodiment, the portion of the heating element that heats up after being energized is distributed near the edge of the bottom wall of the recessed space.
[0032] This design prevents the temperature in the middle area of the bottom wall of the recessed space from becoming too high. Attached Figure Description
[0033] Figure 1 This is a perspective view of the inner liner according to an embodiment of this application;
[0034] Figure 2 This is a perspective view of a cooking device with a steaming function according to an embodiment of this application;
[0035] Figure 3 for Figure 2 A three-dimensional schematic diagram of a cooking device with steaming function from another perspective.
[0036] Figure label:
[0037] 1. Inner liner; 11. Bottom wall of the inner liner; 111. Molding; 112. Recessed space; 12. Side wall of the inner liner; 2. Heating tube. Detailed Implementation
[0038] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.
[0039] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.
[0040] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0041] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0042] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0043] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.
[0044] See Figure 1 This application first provides an inner liner 1, which has an inner liner bottom wall 11. Multiple identical hexagonal moldings 111 are evenly spaced on the inner liner bottom wall 11. The evenly spaced hexagonal moldings 111 on the inner liner bottom wall 11 enhance the strength of the inner liner bottom wall 11, reduce the stress on the inner liner bottom wall 11, and prevent the inner liner bottom wall 11 from succumbing to thermal deformation and emitting a bang when heated. On the one hand, this helps limit the thermal deformation of the inner liner bottom wall 11, reduces material fatigue, and extends the service life of the inner liner bottom wall 11. On the other hand, it prevents users from hearing a bang, preventing user insecurity and improving the user experience.
[0045] It is understandable that the 111 die is produced by a stamping process.
[0046] In some embodiments, each molding 111 extends upward from the bottom side of the inner liner bottom wall 11; in other words, each molding 111 is a groove pressed out from bottom to top.
[0047] Preferred options, please refer to Figure 1 Each molded groove 111 extends downwards from the top side of the inner pot bottom wall 11; in other words, each molded groove 111 is a groove pressed out from top to bottom. During cooking, condensate flows down the inner pot bottom wall 11 under gravity and enters each molded groove 111. Because each molded groove 111 is identical and evenly spaced on the inner pot bottom wall 11, the condensate is also roughly evenly distributed on the inner pot bottom wall 11. This promotes even heating of the inner pot bottom wall 11 and helps prevent significant thermal deformation that could produce a popping sound. On one hand, this helps limit thermal deformation of the inner pot bottom wall 11, reducing material fatigue and extending its service life. On the other hand, it prevents users from hearing a popping sound, reducing their sense of insecurity and improving the user experience.
[0048] Furthermore, each molded section 111 accumulates condensate, which absorbs heat transferred to the bottom wall 11 of the inner liner. This keeps the temperature near each molded section 111 relatively low. With the molded sections 111 evenly distributed on the bottom wall 11, localized overheating is less likely, preventing excessive thermal deformation and the resulting "bang" sound. On one hand, this helps limit thermal deformation of the bottom wall 11, reducing material fatigue and extending its lifespan. On the other hand, it prevents users from hearing a bang, reducing any sense of insecurity and improving the user experience.
[0049] The side length of the molded mold 111 on the top side of the inner liner bottom wall 11 is d, and the interval between two adjacent molded molds 111 on the top side of the inner liner bottom wall 11 is D. Preferably, D and d satisfy: 0.5d ≤ D ≤ d. On the one hand, this makes the two adjacent molded molds 111 relatively close. Due to the heat absorption effect of the condensate inside the two adjacent molded molds 111, the temperature in the area between the two adjacent molded molds 111 is lower, which helps to prevent the local temperature on the inner liner bottom wall 11 from becoming too high and to prevent large local thermal deformation of the inner liner bottom wall 11, which would produce a popping sound. On the other hand, the two adjacent molded molds 111 are not too close, which facilitates the pressing process to produce each molded mold 111.
[0050] Each molded die 111 has a volume of V and a depth of h. Preferably, to ensure that each molded die 111 can hold an appropriate amount of condensate, V and h satisfy: 300 mm. 3 ≤V≤500mm 3 2.5mm≤h≤3.5mm. The height of h ensures that even if the cooking equipment is placed on an uneven or slightly inclined countertop or cabinet bottom, each molded section 111 can still hold a certain amount of condensation.
[0051] For example, V = 382 mm 3 h = 3mm.
[0052] The thickness of the bottom wall is t. In some embodiments, 0.5 mm ≤ t ≤ 1.2 mm. For example, t = 0.8 mm.
[0053] See Figure 1 The central area of the bottom wall 11 of the inner liner is recessed downward to form a recessed space 112, and the mold 111 is disposed on the bottom wall of the recessed space 112. This facilitates the flow of condensate into the mold 111. Specifically, under the action of gravity, the condensate first flows into the recessed space 112, and then into the mold 111.
[0054] See Figure 1The sidewall of the recessed space 112 extends obliquely upward from the bottom wall of the recessed space 112. The sidewall of the recessed space 112 can guide condensate into the recessed space 112, which is beneficial for the condensate to flow into the molding 111.
[0055] For example, the recessed space 112 is formed by a stamping process.
[0056] See Figure 1 The inner liner 1 has an inner liner sidewall 12, and the inner liner sidewall 12 and the inner liner bottom wall 11 are connected by a rounded transition. This facilitates the flow of condensate to the inner liner bottom wall 11 under the action of gravity, and also facilitates the flow of condensate into the molded mold 111.
[0057] For example, the various parts of the inner liner 1 can be seamlessly connected together by laser welding.
[0058] See Figure 2 and Figure 3 The present application further provides a cooking device with a steaming function, which includes an inner pot 1, an external steam generator and a heating element 2. The external steam generator is located outside the inner pot 1 and communicates with the inner pot 1, and the heating element 2 is located below and close to the bottom wall 11 of the inner pot.
[0059] In this cooking appliance with steaming function, multiple identical hexagonal pressed moldings 111 evenly spaced on the bottom wall 11 of the inner pot can enhance the strength of the inner pot bottom wall 11, improve the stress on the inner pot bottom wall 11, and prevent the inner pot bottom wall 11 from succumbing to thermal deformation and making a banging sound during the operation of the heating element 2. On the one hand, this helps to limit the thermal deformation of the inner pot bottom wall 11, reduce material fatigue of the inner pot bottom wall 11, and extend the service life of the inner pot bottom wall 11. On the other hand, it can prevent users from hearing a banging sound, prevent users from feeling unsafe, and improve the user experience.
[0060] See Figure 3 In this embodiment, the portion of the heating element 2 that heats up after being energized is entirely located directly below the bottom wall 11 of the inner pot. This allows as much of the heat generated by the heating element 2 as possible to be transferred to the inner pot 1 through the bottom wall 11, improving the utilization rate of the heat generated by the heating element 2. It also helps to heat the steam inside the inner pot 1 to produce superheated steam, thereby improving cooking efficiency and results. Furthermore, it helps to evaporate condensate on the bottom wall 11 of the inner pot, preventing excessive condensate buildup. In other embodiments, only a portion of the portion of the heating element 2 that heats up after being energized is located directly below the bottom wall 11 of the inner pot.
[0061] See Figure 1 The central area of the bottom wall 11 of the inner liner is recessed downward to form a recessed space 112, and the molding 111 extends downward from the top side of the bottom wall of the recessed space 112. (See reference...) Figure 3 When the heating element 2 is powered on, the entire heating portion is located directly below the bottom wall of the recessed space 112. On one hand, this allows as much of the heat generated by the heating element 2 as possible to be transferred to the inner pot 1 through the bottom wall 11, improving the utilization rate of the heat generated by the heating element 2 and facilitating the heating of steam within the inner pot 1 to produce superheated steam, thereby improving cooking efficiency and results. It also helps to evaporate condensate on the bottom wall 11 of the inner pot into steam, preventing excessive condensate buildup. On the other hand, this concentrates the heat generated by the heating element 2 on the area of the bottom wall 11 with more condensate (i.e., the recessed space 112), preventing dry burning in areas with less condensate (i.e., areas outside the recessed space 112).
[0062] In cooking equipment, the heat generated by heating element 2 tends to concentrate in the center. To prevent the temperature in the middle area of the bottom wall of the recessed space 112 from becoming too high, refer to... Figure 3 The portion of the heating element 2 that heats up after being powered on is distributed near the edge of the bottom wall of the recessed space 112.
[0063] For example, the cooking device with steaming function is a steam oven / steam oven / microwave steam oven combination machine.
[0064] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above 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.
[0065] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of protection of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these modifications and improvements all fall within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the appended claims.
Claims
1. An inner liner, characterized in that, The inner liner has an inner liner bottom wall (11), and multiple identical molded shapes (111) are evenly distributed on the inner liner bottom wall (11), and the molded shapes (111) are regular hexagonal; Each of the moldings (111) extends downward from the top side of the bottom wall (11) of the inner liner; The central area of the bottom wall (11) of the inner liner is recessed downward to form a recessed space (112), and the molding (111) is provided on the bottom wall of the recessed space (112).
2. The inner liner according to claim 1, characterized in that, The volume of each of the moldings (111) is V, and the depth of each of the moldings (111) is h, wherein V and h satisfy: 300 mm 3 ≤V≤500mm 3 , 2.5mm≤h≤3.5mm.
3. The inner liner according to claim 1, characterized in that, The sidewall of the recessed space (112) extends obliquely upward from the bottom wall of the recessed space (112).
4. The inner liner according to claim 1, characterized in that, The inner liner has an inner liner sidewall (12), and the inner liner sidewall (12) and the inner liner bottom wall (11) are connected by an arc transition.
5. A cooking device with a steaming function, characterized in that, include: The inner liner according to any one of claims 1 to 4; An external steam generator is located outside the inner liner and communicates with the inner liner; and The heating tube (2) is located below and close to the bottom wall (11) of the inner liner.
6. The cooking equipment with steaming function according to claim 5, characterized in that, The portion of the heating element (2) that heats up after being powered on is located directly below the bottom wall (11) of the inner liner.
7. The cooking equipment with steaming function according to claim 6, characterized in that, The molding (111) extends downward from the top side of the bottom wall of the recessed space (112); the part of the heating tube (2) that heats up after being powered on is located directly below the bottom wall of the recessed space (112).
8. The cooking equipment with steaming function according to claim 7, characterized in that, The portion of the heating tube (2) that heats up after being energized is distributed near the edge of the bottom wall of the recessed space (112).