Lunch box capable of heating and preserving heat
By introducing steam heating and insulation mechanisms into the lunch box and using heating plates and steam holes for internal circulation and heating, the existing lunch box has been solved, and fast and uniform heating and safe use have been achieved.
Patent Information
- Application Number
- CN202420077426.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-12
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-01-12
AI Technical Summary
The existing insulation lunch boxes are slow to heat food, resulting in uneven heating of food and prone to food scalding.
The steam heating mechanism is used to heat the water in the outer shell through the heating plate, conduct the food in the heat conduction inner vessel, and heat it internally through the steam hole. The steam is adjusted in combination with the heat insulation mechanism to ensure uniform heating and safety.
It achieves rapid and even heating of food, improves heating efficiency and safety, prevents scalds, and enhances the insulation effect of the sealing cover.
Smart Images
Figure CN222236940U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of tableware, in particular to a dining box which can be heated and kept warm. Background Art
[0002] Tableware refers to a box specially used for rice and dishes. It is a daily necessity for busy staff and students to hold meals. Most of them are made of aluminum, stainless steel, plastic, and foam. Some are also made of glass. Lunch boxes made of aluminum and stainless steel are of better quality, light and not easy to rust.
[0003] In order to facilitate outdoor carrying, many lunch boxes have a heating function. They are composed of an outer shell and an inner pot. The water in the outer shell is heated by an electric heating coil, and the temperature is transferred to the inner pot to heat the food. However, when the existing thermal insulation lunch boxes heat the inner pot, the temperature is heated by the inner pot to heat the food. The heating method from the inside to the outside is inefficient and prone to uneven heating of the food. Therefore, technical personnel in this field provide a heatable and heat-insulating lunch box to solve the problems raised in the above background technology. Utility Model Content
[0004] The purpose of the utility model is to provide a lunch box that can be heated and kept warm, which can solve the problems raised in the above-mentioned background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a heatable and heat-insulating lunch box, comprising an outer shell and a sealing cover installed on the top of the outer shell, and also comprising: a heat-conducting inner liner arranged inside the outer shell, through which food is stored, two symmetrically distributed sleeves are fixedly installed on the top of the sealing cover, a U-shaped handle is rotatably installed between the two sleeves, which is convenient for opening and carrying the sealing cover, a heat-insulating inner sleeve is fixedly installed on the inner side of the sealing cover, so as to improve the heat-insulating effect of the sealing cover on food; a steaming mechanism, which is used to quickly heat the food in the heat-conducting inner liner, and the steaming mechanism is installed between the heat-conducting inner liner and the outer shell; a heat-insulating mechanism, which is used to adjust and seal the steam in the outer shell, and the heat-insulating mechanism is installed on the inner side of the outer shell.
[0006] Preferably, the steaming mechanism includes a base fixedly mounted on the bottom of the outer shell, a heater fixedly mounted inside the base, a heating plate located inside the outer shell fixedly mounted on the top of the heater, the heater heats the water in the outer shell through the heating plate, and conducts the water to the heat-conducting inner pot to heat the food, a positioning ring is fixedly connected to the outer side of the heat-conducting inner pot, a plurality of filter screens equidistantly distributed in an annular shape are mounted on the surface of the positioning ring, a plurality of steam holes 1 equidistantly distributed below the filter screen are provided on the surface of the positioning ring, the filter screen prevents food particles from entering the steam hole 1, a limiting ring in contact with the bottom of the positioning ring is fixedly connected to the inner side of the outer shell, a steam hole 2 corresponding to the steam hole 1 is provided on the top of the limiting ring, the steam in the outer shell passes through the steam hole 2 and the steam hole 1, enters from the filter screen into between the sealing cover and the heat-conducting inner pot, and the food is quickly heated by internal circulation.
[0007] Preferably, the heat insulation mechanism includes a pull plate fixedly mounted on the outside of the positioning ring, a sliding groove for limiting the sliding of the pull plate is provided on the outside of the shell, and clamping strips are fixedly connected on both sides of the sliding groove, and the clamping strip is an arc-shaped cylindrical structure, and an arc-shaped strip is fixedly connected between the clamping strip and the inner wall of the sliding groove, and the width of the arc-shaped strip is smaller than the width of the clamping strip, and an arc-shaped clamping groove for limiting the sliding of the clamping strip and the arc-shaped strip is provided at the bottom of the pull plate, which is used to clamp the pull plate on the arc-shaped strip and the clamping strip, and a circular hole for hand-held pulling is provided on the surface of the pull plate, which is easy to operate, and the clamping strip is rotated to insert the arc-shaped clamping groove into the arc-shaped strip and the clamping strip, so that the steam hole two is aligned with or away from the steam hole one, which is convenient for blocking the steam and preventing burns when opening the sealing cover.
[0008] Preferably, a sealing ring in contact with the top opening of the outer shell is fixedly connected to the bottom of the sealing cover, and the sealing ring is made of rubber material to improve the sealing performance of the sealing cover to the outer shell.
[0009] Preferably, two symmetrically distributed buckles are rotatably mounted on the outer side of the sealing cover, and a convex strip cooperating with the buckles is provided on the outer side of the shell, so as to facilitate fixing the sealing cover on the shell.
[0010] Preferably, the outer side of the U-shaped handle is provided with anti-slip grooves for easy hand-held carrying.
[0011] Preferably, a partition plate is fixedly connected to the bottom inner wall of the heat-conducting liner for storing meals separately.
[0012] Preferably, a spring is fixedly connected between the heat-conducting inner liner and the top of the base, and the heating plate is located on the inner side of the spring, so as to facilitate quick removal of the heat-conducting inner liner.
[0013] Preferably, the outer side of the heater is fixedly connected with a wiring socket extending to the outer side of the base for supplying electricity to the heater.
[0014] Preferably, a detection ring is fixedly connected to the inner side of the shell for marking the water filling line to facilitate water filling into the shell and prevent excessive water filling.
[0015] Compared with the prior art, the beneficial effects of the utility model are:
[0016] 1. The utility model adopts a steam heating mechanism, in which the heater heats the water in the outer shell through the heating plate, and conducts the water to the heat-conducting inner container to heat the food. At the same time, the generated steam passes through the steam hole 2 and the steam hole 1 and enters from the filter screen between the sealing cover and the heat-conducting inner container, and the food is quickly heated by internal circulation, thereby achieving the effect of quickly heating the food and improving the uniformity of heating the food.
[0017] 2. The utility model uses a heat insulation mechanism to rotate the card strip to insert the arc-shaped card slot into the arc-shaped card strip and the card strip, so that the steam hole 2 and the steam hole 1 are aligned or separated, which is convenient for blocking the steam and preventing burns when opening the sealing cover, thereby achieving the effect of improving the safety of heat preservation and heating. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0019] Figure 2 This is a schematic diagram of the sealing cover and the outer shell structure in the utility model;
[0020] Figure 3 This is a schematic diagram of the heating plate and the positioning ring structure in the utility model;
[0021] Figure 4 For the utility model Figure 3 Schematic diagram of the enlarged structure of area B;
[0022] Figure 5 This is a schematic diagram of the structure of the partition plate and the pull plate in the utility model;
[0023] Figure 6 For the utility model Figure 2 Schematic diagram of the enlarged structure of area A.
[0024] In the figure: 1. outer shell; 2. sealing cover; 3. steam heating mechanism; 301. base; 302. heater; 303. heating plate; 304. positioning ring; 305. filter; 306. limiting ring; 4. heat insulation mechanism; 401. pull plate; 402. clamping strip; 403. arc strip; 5. heat-conducting liner; 6. sleeve seat; 7. U-shaped handle; 8. thermal insulation inner sleeve; 9. sealing ring; 10. buckle; 11. partition plate; 12. spring; 13. wiring socket; 14. detection ring. DETAILED DESCRIPTION
[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0026] Embodiment 1
[0027] See also Figure 1-Figure 3 The illustrated heating and heat-insulating lunch box comprises an outer shell 1 and a sealing cover 2 mounted on the top of the outer shell 1, and further comprises: a heat-conducting liner 5 arranged inside the outer shell 1, through which food is stored, two symmetrically distributed sleeves 6 are fixedly mounted on the top of the sealing cover 2, a U-shaped handle 7 is rotatably mounted between the two sleeves 6, which is convenient for opening and carrying the sealing cover 2, a heat-insulating inner sleeve 8 is fixedly mounted on the inner side of the sealing cover 2, so as to improve the heat-insulating effect of the sealing cover 2 on food; a steaming mechanism 3, which is used to quickly heat the food in the heat-conducting liner 5, and the steaming mechanism 3 is mounted between the heat-conducting liner 5 and the outer shell 1; a heat-insulating mechanism 4, which is used to adjust and seal the steam in the outer shell 1, and the heat-insulating mechanism 4 is mounted on the inner side of the outer shell 1.
[0028] See also Figure 2-Figure 6The steaming mechanism 3 shown in the figure includes a base 301 fixedly mounted on the bottom of the shell 1, a heater 302 is fixedly mounted inside the base 301, a heating plate 303 located inside the shell 1 is fixedly mounted on the top of the heater 302, the heater 302 heats the water in the shell 1 through the heating plate 303, and conducts the water to the heat-conducting inner pot 5 to heat the food, a positioning ring 304 is fixedly connected to the outer side of the heat-conducting inner pot 5, a plurality of filters 305 equidistantly distributed in an annular shape are mounted on the surface of the positioning ring 304, a plurality of steam holes 1 equidistantly distributed below the filters 305 are opened on the surface of the positioning ring 304, the filters 305 prevent food particles from entering the steam hole 1, a limiting ring 306 in contact with the bottom of the positioning ring 304 is fixedly connected to the inner side of the shell 1, a steam hole 2 corresponding to the steam hole 1 is opened on the top of the limiting ring 306, the steam in the shell 1 passes through the steam hole 2 and the steam hole 1 from the filter 305 into between the sealing cover 2 and the heat-conducting inner pot 5, and the food is quickly heated by internal circulation;
[0029] The user starts the heater 302 to make the heating plate 303 heat the water in the outer shell 1, heat the heat-conducting inner pot 5, and heat the food near the inner wall of the heat-conducting inner pot 5. The steam generated by the water heating passes through the steam hole 1 and the steam hole 2 along the heat-insulating inner sleeve 8 on the inner side of the sealing cover 2 to heat the food inside the heat-conducting inner pot 5. The double-layer heating method is used to improve the heating efficiency of the food.
[0030] See also Figure 2 , Figure 5 and Figure 6 The heat insulation mechanism 4 shown in the figure includes a pull plate 401 fixedly mounted on the outside of the positioning ring 304, a sliding groove for limiting the sliding of the pull plate 401 is provided on the outside of the shell 1, and clamping strips 402 are fixedly connected on both sides of the sliding groove. The clamping strip 402 is an arc-shaped cylindrical structure, and an arc-shaped strip 403 is fixedly connected between the clamping strip 402 and the inner wall of the sliding groove. The width of the arc-shaped strip 403 is smaller than the width of the clamping strip 402. An arc-shaped clamping groove for limiting the sliding of the clamping strip 402 and the arc-shaped strip 403 is provided at the bottom of the pull plate 401, which is used to clamp the pull plate 401 on the arc-shaped strip 403 and the clamping strip 402. A round hole for hand-held pulling is provided on the surface of the pull plate 401, which is convenient for operation;
[0031] The user pinches the round hole of the pull plate 401 and rotates it to insert the arc groove on the pull plate 401 into the arc strip 403 and the clamping strip 402, so that the steam hole 2 on the limit ring 306 is aligned with or away from the steam hole 1 on the positioning ring 304, which is convenient for blocking the steam in the outer shell 1 to prevent burns when opening the sealing cover 2, thereby improving the safety of food heating.
[0032] The working principle is convenient for quickly heating food: first, the user starts the heater 302 to make the heating plate 303 heat the water in the outer shell 1, heat the heat-conducting liner 5, and heat the food near the inner wall of the heat-conducting liner 5, and the steam generated by the water heating passes through the steam hole 2 on the limit ring 306 and the steam hole 1 on the positioning ring 304 along the insulation inner sleeve 8 on the inner side of the sealing cover 2 to heat the food inside the heat-conducting liner 5. The inner and outer double-layer heating method is used to improve the heating efficiency of the food. After the heating is completed, the user pinches the pull plate 401 and rotates it to insert the arc-shaped groove of the pull plate 401 into the arc-shaped strip 403 and the clip strip 402, so that the steam hole 1 on the positioning ring 304 is away from the steam hole 2 on the limit ring 306, and the steam hole 2 is blocked. Finally, the sealing cover 2 is opened to eat the heated food, thereby achieving the effect of fast and safe heating and improving the uniformity of food heating.
[0033] Embodiment 2
[0034] See also Figure 2 and Figure 3 The present embodiment further illustrates the first embodiment. In the figure, the bottom of the sealing cover 2 is fixedly connected with a sealing ring 9 in contact with the top opening of the shell 1. The sealing ring 9 is made of rubber to improve the sealing performance of the sealing cover 2 to the shell 1. Two symmetrically distributed buckles 10 are rotatably mounted on the outer side of the sealing cover 2. The outer side of the shell 1 is provided with convex strips that match the buckles 10, which is convenient for fixing the sealing cover 2 on the shell 1. The outer side of the U-shaped handle 7 is provided with anti-slip grooves for easy hand-held carrying.
[0035] In this embodiment, the user presses the sealing ring 9 on the sealing cover 2 against the top opening of the outer shell 1, and buckles the two buckles 10 on the convex strips of the outer shell 1 to seal the outer shell 1, thereby improving the heat preservation effect of food, and the anti-slip grooves on the U-shaped handle 7 are convenient for users to lift, thereby improving the convenience of outdoor carrying.
[0036] Embodiment 3
[0037] See also Figure 3 , Figure 5 and Figure 6 , this embodiment further illustrates other embodiments. In the figure, a partition plate 11 is fixedly connected to the inner wall of the bottom of the heat-conducting inner pot 5 for storing food separately. A spring 12 is fixedly connected between the heat-conducting inner pot 5 and the top of the base 301. The heating plate 303 is located on the inner side of the spring 12, which is convenient for quickly taking out the heat-conducting inner pot 5. A wiring socket 13 extending to the outside of the base 301 is fixedly connected to the outer side of the heater 302 for powering on the heater 302. A detection ring 14 is fixedly connected to the inner side of the outer shell 1 for marking the water filling line to facilitate water filling of the outer shell 1 and prevent excessive water filling.
[0038] In this embodiment: its purpose is to store rice and vegetables separately by the partition plate 11 on the heat-conducting inner tank 5 to prevent the rice and vegetables from being mixed during outdoor transportation, and when the user cleans the outer shell 1 and the heat-conducting inner tank 5, the user can rotate the pull plate 401 between the two clamping strips 402, open the sealing cover 2, and use the elastic force of the spring 12 to eject the heat-conducting inner tank 5, so as to avoid the adsorption force between the outer shell 1 and the heat-conducting inner tank 5 being too large to be separated, and when filling water, the water can be filled to the position of the detection ring 14 to prevent excessive water filling, thereby improving the convenience of use.
[0039] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include"-"comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process-method-article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process-method-article or device.
[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A heatable and heat-insulating lunch box, comprising a housing (1) and a sealing cover (2) mounted on the top of the housing (1), characterized in that: Also includes: A heat-conducting inner liner (5) is arranged inside the outer shell (1); two symmetrically distributed sleeves (6) are fixedly installed on the top of the sealing cover (2); a U-shaped handle (7) is rotatably installed between the two sleeves (6); and a heat-insulating inner sleeve (8) is fixedly installed on the inner side of the sealing cover (2); A steaming mechanism (3) for rapidly heating food in the heat-conducting inner pot (5), wherein the steaming mechanism (3) is installed between the heat-conducting inner pot (5) and the outer shell (1); The heat insulating mechanism (4) is used for regulating and sealing the steam in the outer shell (1); the heat insulating mechanism (4) is installed on the inner side of the outer shell (1).
2. A heatable and heat-insulating lunch box according to claim 1, characterized in that: The steam heating mechanism (3) comprises a base (301) fixedly mounted on the bottom of the outer shell (1); a heater (302) is fixedly mounted inside the base (301); a heating plate (303) located inside the outer shell (1) is fixedly mounted on the top of the heater (302); a positioning ring (304) is fixedly connected to the outer side of the heat-conducting inner container (5); a plurality of filter screens (305) equidistantly distributed in an annular shape are mounted on the surface of the positioning ring (304); a plurality of steam holes (1) equidistantly distributed below the filter screens (305) are provided on the surface of the positioning ring (304); a limiting ring (306) in contact with the bottom of the positioning ring (304) is fixedly connected to the inner side of the outer shell (1); a steam hole (2) corresponding to the steam hole (1) is provided on the top of the limiting ring (306).
3. A heatable and heat-insulating lunch box according to claim 2, characterized in that: The heat insulation mechanism (4) comprises a pull plate (401) fixedly mounted on the outside of the positioning ring (304); a slide groove for limiting the sliding of the pull plate (401) is provided on the outside of the housing (1); clamping strips (402) are fixedly connected to both sides of the slide groove; the clamping strip (402) is an arc-shaped cylindrical structure; an arc-shaped strip (403) is fixedly connected between the clamping strip (402) and the inner wall of the slide groove; the width of the arc-shaped strip (403) is smaller than the width of the clamping strip (402); an arc-shaped clamping groove for limiting the sliding of the clamping strip (402) and the arc-shaped strip (403) is provided at the bottom of the pull plate (401); and a round hole for hand-held pulling is provided on the surface of the pull plate (401).
4. A heatable and heat-insulating lunch box according to claim 1, characterized in that: The bottom of the sealing cover (2) is fixedly connected with a sealing ring (9) in contact with the top opening of the housing (1); the sealing ring (9) is made of rubber.
5. A heatable and heat-insulating lunch box according to claim 1, characterized in that: Two symmetrically distributed buckles (10) are rotatably mounted on the outer side of the sealing cover (2), and a convex strip matching the buckles (10) is provided on the outer side of the housing (1).
6. A heatable and heat-insulating lunch box according to claim 1, characterized in that: The outer side of the U-shaped handle (7) is provided with anti-slip grooves.
7. A heatable and heat-insulating lunch box according to claim 1, characterized in that: A partition plate (11) is fixedly connected to the bottom inner wall of the heat-conducting inner container (5).
8. The heatable and heat-insulating lunch box according to claim 2, characterized in that: A spring (12) is fixedly connected between the heat-conducting inner container (5) and the top of the base (301), and the heating plate (303) is located on the inner side of the spring (12).
9. A heatable and heat-insulating lunch box according to claim 2, characterized in that: The outer side of the heater (302) is fixedly connected to a wiring socket (13) extending to the outer side of the base (301).
10. The heatable and heat-insulating lunch box according to claim 1, characterized in that: A detection ring (14) is fixedly connected to the inner side of the housing (1) and is used to mark the water injection line.