A new heating lunch box

Abstract

The utility model discloses a novel heating lunch box, including box body, inner bag and heating module, the inside of this box body is provided with accommodating cavity, the bottom of this accommodating cavity is provided with the opening of up and down through, this heating module is installed at the opening and its top stretches into to the accommodating cavity, this inner bag can be placed in the accommodating cavity of separating and this inner bag bottom recess forms the first recess, when placing the inner bag in the accommodating cavity, the top of heating module can be embedded to the first recess and the top surface of heating module and the first recess top wall are in close contact to realize heat transfer, wherein, still including the limiting rib of a plurality of interval ring and is established on the lateral wall of accommodating cavity, when placing the inner bag in the accommodating cavity, the outer wall of inner bag and a plurality of limiting rib abut to realize the centring of inner bag. Therefore, through above setting, can guarantee the even heating of inner bag bottom, thereby improve the even heating of food in inner bag, and then improve user experience.

Description

Technical Field

[0001] This utility model relates to the field of lunch box technology, and in particular to a novel heated lunch box. Background Technology

[0002] In their daily work, many office workers choose to bring their own lunch in lunchboxes because their workplaces are often far from their homes. To make it easier to reheat the food in these lunchboxes, some manufacturers have designed reheatable lunchboxes.

[0003] Currently, heated lunch boxes on the market typically include a box body and a removable inner liner placed inside the box body. The bottom of the inner box body is equipped with a heating module. When the inner liner is placed inside the box body, the bottom of the inner liner can contact the heating module to heat the food inside, allowing users to enjoy hot food anytime, anywhere.

[0004] However, in actual use, it was found that the lack of a structure to limit and fix the inner pot inside the box makes it easy for the inner pot to be misaligned when placed. At the same time, it is impossible to ensure that the inner pot is centered, which leads to uneven heating at the bottom of the inner pot, resulting in uneven heating of the food inside, which greatly reduces the user experience. Utility Model Content

[0005] To overcome the shortcomings of existing technologies, the purpose of this utility model is to provide a novel heated lunch box. By setting a first groove at the bottom of the inner pot, when the inner pot is placed into the receiving cavity, the inner pot can be positioned by fitting with the top of the heating module through the first groove, thus preventing the inner pot from deviating from its position. At the same time, by setting several limiting ribs at intervals on the inner side wall of the receiving cavity, when the inner pot is placed into the receiving cavity, the limiting ribs can abut against the outer wall of the inner pot, thereby achieving the centering positioning of the inner pot, ensuring that the bottom of the inner pot is heated evenly, thereby improving the heating evenness of the food and greatly enhancing the user experience.

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] A new type of heated lunch box includes:

[0008] The box body has an internal cavity with a top opening and a bottom opening that extends through the box.

[0009] A heating module is installed at the opening with its top extending into the receiving cavity;

[0010] The inner liner is detachably placed within the receiving cavity; the bottom of the inner liner is recessed to form a first groove; when the inner liner is placed within the receiving cavity, the top of the heating module is embedded in the first groove and the top surface of the heating module is in contact with the top wall of the first groove to achieve heat transfer;

[0011] It also includes several limiting ribs spaced around the inner wall of the receiving cavity. When the inner liner is placed in the receiving cavity, the outer wall of the inner liner abuts against the several limiting ribs to achieve the centering of the inner liner.

[0012] As an optional implementation, the heating module includes a heat transfer plate and a heating film attached to the bottom surface of the heat transfer plate and heated thereon, wherein the top surface of the heat transfer plate is attached to the top wall of the first groove to achieve heat transfer.

[0013] The heating film is equipped with an NTC temperature sensor, which contacts the heat transfer plate to detect the temperature.

[0014] As an optional implementation, the heating module further includes a pressure plate located below the heat transfer plate and fixed to the housing, the pressure plate fixing the heat transfer plate at the opening of the receiving cavity; heat insulation cotton is provided between the heat transfer plate and the pressure plate.

[0015] As an alternative implementation, the bottom of the housing is recessed to form a second groove, in which a detachable battery module is placed, and the opening of the second groove is fitted with a sealing cap to confine the battery module within the second groove.

[0016] As an optional implementation, the box body includes an upper shell and a lower shell, wherein:

[0017] The upper shell has the receiving cavity formed inside, and the opening is provided at the bottom of the upper shell;

[0018] The bottom of the lower shell is recessed to form the second groove;

[0019] The upper shell and the lower shell are connected to each other and enclose each other to form an installation cavity. A power board is provided in the installation cavity, and the power board is electrically connected to the battery module and the heating module respectively.

[0020] As an optional implementation, the power board is provided with a TYPE-C interface for connecting to an external power source, and the lower shell is provided with a through hole for communicating with the TYPE-C interface, and the through hole is provided with a flip-up first dust cover.

[0021] As an optional implementation, a display module is also included on the lower shell. The display module includes a display screen and a control board located inside the display screen. The control board is electrically connected to the power board. The control board is provided with control buttons for adjusting the temperature and a digital display tube for displaying the temperature.

[0022] As an optional implementation, it also includes an inner liner cover, the outer periphery of which is fitted with a sealing ring, the inner liner cover is detachably placed on the top of the inner liner and abuts against the inner wall of the inner liner through the sealing ring to achieve a seal; the inner liner cover is provided with an exhaust valve.

[0023] As an optional implementation, it also includes a detachable top cover that is attached to the box body, the top cover having buckles on both sides that engage with the sides of the box body; the top cover is provided with a handle.

[0024] As an optional implementation, the top of the cover is also provided with a cutlery slot for placing cutlery, and the opening of the cutlery slot is fitted with a second dust cover.

[0025] In summary, this utility model has the following technical effects:

[0026] This utility model of a heated lunch box features a first groove at the bottom of the inner liner. When the inner liner is placed into the receiving cavity, it engages with the top of the heating module through the first groove to achieve positioning and prevent deviation of the inner liner's position. Simultaneously, several limiting ribs are spaced around the inner wall of the receiving cavity. When the inner liner is placed into the receiving cavity, these limiting ribs abut against the outer wall of the inner liner, thereby achieving centered positioning of the inner liner, ensuring uniform heating of the bottom of the inner liner, and thus improving the uniformity of food heating and greatly enhancing the user experience. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the structure of the heated lunch box of this utility model;

[0029] Figure 2 This is an exploded schematic diagram of the heated lunch box of this utility model;

[0030] Figure 3 for Figure 2 An illustration of the explosion from another perspective;

[0031] Figure 4 This is an exploded view of the heating module in the heated lunch box of this utility model;

[0032] Figure 5 This is a schematic diagram of the structure of the heated lunch box of this utility model after the second dust cover is hidden in the top cover;

[0033] Figure 6 This is a cross-sectional schematic diagram of the heated lunch box of this utility model;

[0034] Figure 7 This is a structural schematic diagram of the heated lunch box of this utility model from another perspective.

[0035] The meanings of the reference numerals in the attached figures are as follows:

[0036] 1. Box body; 11. Upper shell; 111. Receiving cavity; 112. Opening; 113. Limiting rib; 114. Locking block; 12. Lower shell; 121. Second groove; 122. First dust cover; 2. Heating module; 21. Heat transfer plate; 22. Heating film; 23. Heat insulation cotton; 24. Pressure plate; 3. Inner liner; 31. First groove; 4. Battery module; 5. Sealing cover; 6. Power board; 61. TYPE-C interface; 7. Display module; 71. Control board; 711. Control buttons; 712. Digital display tube; 72. Display screen; 8. Inner liner cover; 81. Sealing ring; 82. Exhaust valve; 9. Top cover; 91. Buckle; 92. Handle; 93. Cutlery slot; 94. Second dust cover. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0038] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0039] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0040] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; 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, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.

[0041] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, components, or parts (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, components, or parts. Unless otherwise stated, "a plurality of" means two or more.

[0042] The technical solution of this utility model will be further described below with reference to the embodiments and accompanying drawings.

[0043] See Figures 1 to 7 This application provides a novel heated lunch box, including a box body 1, an inner liner 3, and a heating module 2: the box body 1 has an internal cavity 111 with a top opening, and the bottom of the cavity 111 has a through opening 112; the heating module 2 is installed at the opening 112 and its top extends into the cavity 111; the inner liner 3 is detachably placed in the cavity 111, and the bottom of the inner liner 3 is recessed to form a first groove 31; when the inner liner 3 is placed in the cavity 111, the top of the heating module 2 is embedded in the first groove 31 and the top surface of the heating module 2 is in contact with the top wall of the first groove 31 to achieve heat transfer, thereby heating the food in the inner liner 3.

[0044] It also includes several limiting ribs 113 that are spaced around the inner wall of the receiving cavity 111. When the inner liner 3 is placed in the receiving cavity 111, the outer wall of the inner liner 3 abuts against the several limiting ribs 113 to achieve the centering of the inner liner 3.

[0045] Therefore, by setting a first groove 31 at the bottom of the inner liner 3, when the inner liner 3 is placed into the receiving cavity 111, the inner liner 3 can be positioned by engaging with the top of the heating module 2 through the first groove 31, thus preventing the inner liner 3 from deviating from its position. At the same time, by setting a number of limiting ribs 113 at intervals on the inner side wall of the receiving cavity 111 of the box body 1, when the inner liner 3 is placed into the receiving cavity 111, the number of limiting ribs 113 can abut against the outer wall of the inner liner 3, thereby achieving the centering positioning of the inner liner 3, ensuring that the bottom of the inner liner 3 is heated evenly, thereby improving the heating uniformity of the food and greatly enhancing the user experience.

[0046] See Figure 4 and Figure 7 The heating module 2 includes a heat transfer plate 21 and a heating film 22 that is attached to the bottom surface of the heat transfer plate 21 and heats it. The top surface of the heat transfer plate 21 is attached to the top wall of the first groove 31 to achieve heat transfer. Preferably, the inner liner 3 is made of stainless steel and the heat transfer plate 21 is an aluminum plate. In addition, the heating film 22 is provided with an NTC temperature sensor, which touches the heat transfer plate 21 to achieve temperature detection.

[0047] Furthermore, the heating module 2 also includes a pressure plate 24 located below the heat transfer plate 21 and fixed to the box body 1. The pressure plate 24 is used to fix the heat transfer plate 21 at the opening 112 of the receiving cavity 111. A heat insulation cotton 23 is provided between the heat transfer plate 21 and the pressure plate 24, which can not only prevent heat loss and improve the heating efficiency of the inner liner 3, but also prevent heat from being transferred to the inside of the box body 1 and affecting the internal electrical components, thus ensuring the safety of product use.

[0048] See Figure 2-3 The box body 1 includes an upper shell 11 and a lower shell 12. The upper shell 11 has a cavity 111 formed inside, and an opening 112 is provided at the bottom of the upper shell 11. The pressure plate 24 is fixed to the bottom of the upper shell 11 and clamps the heat transfer plate 21 to the opening 112. In addition, the bottom of the lower shell 12 is recessed to form a second groove 121. A detachable battery module 4 is placed in the second groove 121, and a sealing cover 5 is installed at the opening of the second groove 121 to confine the battery module 4 within the second groove 121.

[0049] Furthermore, the upper shell 11 and the lower shell 12 are interconnected and enclosed to form an installation cavity. The installation cavity is equipped with a power board 6, which is electrically connected to the battery module 4 and the heating film 22.

[0050] Therefore, the battery module 4 can supply power to the heating film 22 via the power board 6, thereby causing the heating film 22 to heat up and heat the heat transfer plate 21. In addition, the built-in battery module 4 allows the heated lunch box to be heated anytime and anywhere, making its application scenarios more extensive.

[0051] In addition, the power board 6 is provided with a TYPE-C interface 61 for connecting to an external power source, and the lower shell 12 has a through hole for connecting to the TYPE-C interface 61, and a flip-up first dust cover 122 is provided on the through hole. Thus, by providing the TYPE-C interface 61, it is convenient to charge the battery module 4.

[0052] In addition, a display module 7 is included on the lower shell 12. The display module 7 includes a display screen 72 and a control board 71 located inside the display screen 72. The control board 71 is electrically connected to the power board 6. The control board 71 is equipped with control buttons 711 for adjusting the temperature and a digital display tube 712 for displaying the temperature. Thus, by setting up the display module 7, users can easily observe the internal temperature of the lunch box in real time and easily adjust the heating temperature of the lunch box.

[0053] See also Figure 2-3 The lunch box also includes an inner lid 8, which is fitted with a sealing ring 81 on its outer periphery. The inner lid 8 is detachably placed on the top of the inner liner 3 and abuts against the inner wall of the inner liner 3 through the sealing ring 81 to achieve a seal. In addition, the inner lid 8 is also provided with an exhaust valve 82. When the internal air pressure of the inner liner 3 is too high, the exhaust valve 82 can be opened to release the gas, thereby ensuring the balance of air pressure inside and outside the inner liner 3.

[0054] In addition, it includes a detachable top cover 9 that is attached to the box body 1. The top cover 9 has flip-up buckles 91 on both sides, and the box body 1 has locking blocks 114 on both sides. When the top cover 9 is placed on the top of the box body 1 and the buckles 91 are flipped to engage with the locking blocks 114, the top cover 9 can be assembled and fixed. In addition, the top cover 9 is also provided with a handle 92. When the top cover 9 is fixed to the top of the box body 1, the user can grab the handle 92 to lift the heated lunch box for easy carrying.

[0055] In addition, the top of the cover 9 is provided with a tableware slot 93 for placing tableware, such as chopsticks and spoons. The opening of the tableware slot 93 is also equipped with a second dust cover 94, so that the chopsticks and spoons can be confined inside the tableware slot 93.

[0056] In summary, this utility model has the following technical effects:

[0057] The heating lunch box of this utility model has a first groove 31 at the bottom of the inner liner 3. When the inner liner 3 is placed into the receiving cavity 111, the inner liner 3 can be positioned by fitting with the top of the heating module 2 through the first groove 31, thus preventing the inner liner 3 from deviating from its position. At the same time, by setting several limiting ribs 113 at intervals on the inner side wall of the receiving cavity 111 of the box body 1, when the inner liner 3 is placed into the receiving cavity 111, the several limiting ribs 113 can abut against the outer wall of the inner liner 3, thereby achieving the centering positioning of the inner liner 3, ensuring that the bottom of the inner liner 3 is heated evenly, thereby improving the heating uniformity of the food and greatly enhancing the user experience.

[0058] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

Claims

1. A novel heated lunch box, characterized in that, include: The box body has an internal cavity with a top opening and a bottom opening that extends through the box. A heating module is installed at the opening with its top extending into the receiving cavity; The inner liner is detachably placed within the receiving cavity; the bottom of the inner liner is recessed to form a first groove; when the inner liner is placed within the receiving cavity, the top of the heating module is embedded in the first groove and the top surface of the heating module is in contact with the top wall of the first groove to achieve heat transfer; It also includes several limiting ribs spaced around the inner wall of the receiving cavity. When the inner liner is placed in the receiving cavity, the outer wall of the inner liner abuts against the several limiting ribs to achieve the centering of the inner liner.

2. The novel heated lunch box according to claim 1, characterized in that: The heating module includes a heat transfer plate and a heating film attached to the bottom surface of the heat transfer plate and heated thereon. The top surface of the heat transfer plate is attached to the top wall of the first groove to achieve heat transfer. The heating film is equipped with an NTC temperature sensor, which contacts the heat transfer plate to detect the temperature.

3. The novel heated lunch box according to claim 2, characterized in that: The heating module also includes a pressure plate located below the heat transfer plate and fixed to the box body, the pressure plate fixing the heat transfer plate at the opening of the receiving cavity; heat insulation cotton is provided between the heat transfer plate and the pressure plate.

4. The novel heated lunch box according to any one of claims 1-3, characterized in that: The bottom of the box is recessed to form a second groove, in which a detachable battery module is placed. The opening of the second groove is fitted with a sealing cap to confine the battery module within the second groove.

5. The novel heated lunch box according to claim 4, characterized in that: The box body includes an upper shell and a lower shell, wherein: The upper shell has the receiving cavity formed inside, and the opening is provided at the bottom of the upper shell; The bottom of the lower shell is recessed to form the second groove; The upper shell and the lower shell are connected to each other and enclose each other to form an installation cavity. A power board is provided in the installation cavity, and the power board is electrically connected to the battery module and the heating module respectively.

6. The novel heated lunch box according to claim 5, characterized in that: The power board is provided with a TYPE-C interface for connecting to an external power source. The lower shell has a through hole for connecting to the TYPE-C interface, and the through hole is provided with a flip-up first dust cover.

7. The novel heated lunch box according to claim 5, characterized in that: It also includes a display module disposed on the lower shell, the display module including a display screen and a control board located inside the display screen, the control board being electrically connected to the power board; the control board is provided with control buttons for adjusting the temperature and a digital display tube for displaying the temperature.

8. The novel heated lunch box according to any one of claims 1-3, characterized in that: It also includes an inner liner cover, the outer periphery of which is fitted with a sealing ring. The inner liner cover is detachably placed on the top of the inner liner and abuts against the inner wall of the inner liner through the sealing ring to achieve a seal; the inner liner cover is provided with an exhaust valve.

9. The novel heated lunch box according to any one of claims 1-3, characterized in that: It also includes a detachable top cover that is attached to the box body, and the top cover has buckles on both sides that engage with the sides of the box body; the top cover is provided with a handle.

10. The novel heated lunch box according to claim 9, characterized in that: The top of the cover is also provided with a cutlery slot for placing cutlery, and the opening of the cutlery slot is fitted with a second dust cover.

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