A lunch box that is easy to keep warm
By setting up electric heating tubes and insulation tanks in the lunch box and using heating and monitoring systems to maintain water heat, the problem of rapid temperature loss of existing lunch boxes is solved and a better insulation effect is achieved.
Patent Information
- Application Number
- CN202421482672.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-26
- Publication Date
- 2025-04-08
- Estimated Expiration
- 2034-06-26
AI Technical Summary
The existing insulation lunch boxes lose faster after heating, and the lunch boxes cannot be kept continuously, resulting in poor insulation effect.
A lunch box including a shell, a heating mechanism and a box lid is designed. The shell is equipped with a storage box and an insulation tank. An electric heating tube is provided at the bottom of the insulation tank. The tap water is heated through the heating mechanism to maintain the water heat to continuously insulate the heat.
The water in the insulation tank can be heated and monitored through the electric heating tube, which can continuously maintain the water heat, thereby effectively insulating the meals stored in the box, improving the insulation effect of the lunch box.
Smart Images
Figure CN222722561U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of lunch boxes, in particular to a lunch box which is convenient for heat preservation. Background Art
[0002] A lunch box is a box specially used to hold meals, also known as a lunch box. It is mostly made of aluminum, stainless steel, or plastic. Lunch boxes include plastic lunch boxes, insulated lunch boxes, and ordinary lunch boxes.
[0003] At present, the insulated lunch box is an ordinary lunch box with an insulated outer shell added. The inner and outer layers are filled with foam plastic, and the inner layer is plated with a metal film to reduce heat loss from three aspects: conduction, radiation, and convection. An electric heating device is installed between the lunch box and the outer shell to supplement the heat loss and keep the food at a certain higher temperature. Since some heating devices directly heat the box body, it is easy to cause damage to the box body, and the temperature loses quickly after heating, and the lunch box cannot be kept warm continuously, resulting in poor insulation effect of the lunch box. Utility Model Content
[0004] The purpose of the utility model is to provide a lunch box which is convenient for heat preservation, so as to solve the problems raised in the above-mentioned background technology.
[0005] To achieve the above object, the utility model provides the following technical solution: a lunch box that is easy to keep warm, comprising a shell, a heating mechanism located at one end of the shell, and a box cover located above the top of the shell, wherein the shell comprises:
[0006] A containing box is arranged inside the shell, and a heat preservation groove is arranged between the shell and the containing box.
[0007] Preferably, an electric heating tube is provided at the bottom end of the insulation tank, a display screen is provided at the top of one end of the heating mechanism, a liquid inlet and outlet are provided at the middle position of the top of one end of the shell, and a sealing plug is provided at the position of the liquid inlet and outlet at one end of the shell.
[0008] Preferably, buckles are provided on both sides of the box cover, fixing blocks are provided at both ends of both sides of the box cover, a fixing shaft is provided between the two groups of fixing blocks and passes through the top of the buckle, a slot is provided at the bottom of one side of the buckle, blocks matching the slot are provided on both sides of the shell, limiting blocks are provided at both ends and both sides of the bottom of the box cover, a sealing gasket is provided at the bottom of the box cover, and a vacuum groove is provided inside the box cover.
[0009] Preferably, the heating mechanism is fixedly connected to the shell by means of sealant and fixing bolts, and the heating mechanism is a sealed and waterproof structure. A temperature control module is arranged inside the heating mechanism, and a control button is arranged at the bottom of one end of the heating mechanism.
[0010] Preferably, a battery is arranged inside the heating mechanism, the electric heating tube is electrically connected to the battery through an electric wire, a charging port is arranged at the bottom of the heating mechanism, and a rubber plug is arranged at the charging port.
[0011] Preferably, an internal thread is provided on the inner side of the liquid inlet and outlet, and an external thread is provided on the outer side of the sealing plug, and the sealing plug is detachably connected to the liquid inlet and outlet via the external thread and the internal thread.
[0012] Preferably, the electric heating tube has an "S"-shaped structure, a temperature sensor is provided at one end inside the heating mechanism, and the temperature sensor penetrates into the interior of the insulation tank, and a sealing ring is provided at one end of the sealing plug.
[0013] Preferably, both ends of the fixed shaft are respectively welded to the fixed blocks, the fixed shaft is fixedly connected to the box cover through the fixed blocks, a rotation hole is provided at the top end of the buckle, and the fixed shaft passes through the rotation hole.
[0014] Preferably, the two groups of the card blocks are respectively welded to the two sides of the shell, and the buckle is detachably connected to the card block via a card slot.
[0015] Preferably, the top end of the limit block is welded to the bottom end of the box cover, a fixing groove is provided at the bottom of the box cover, and the sealing gasket is detachably connected to the box cover via the fixing groove.
[0016] Compared with the prior art, the beneficial effects of the utility model are:
[0017] The utility model can inject tap water into the insulation tank through the liquid inlet and outlet and the sealing plug, fix the box cover and the shell body through the clamping block, the clamping groove and the buckle, and the installation sealing effect between the box cover and the shell body is better through the limit block and the sealing gasket, heat the tap water through the heating mechanism and the electric heating pipe, and keep the setting of the tap water stable through the electric heating pipe, so as to keep the containing box continuously warm, thereby improving the practicality of the lunch box. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can also be obtained based on these drawings without creative work. In all drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.
[0019] Figure 1 It is a structural schematic diagram of the utility model.
[0020] Figure 2 It is a schematic diagram of the internal structure of the utility model.
[0021] Figure 3 It is a cross-sectional view of the utility model.
[0022] In the figure: 1. Shell; 101. Container; 102. Insulation tank; 2. Heating mechanism; 201. Electric heating tube; 202. Display screen; 203. Liquid inlet and outlet; 204. Sealing plug; 3. Box cover; 301. Buckle; 302. Fixed block; 303. Fixed shaft; 304. Slot; 305. Block; 306. Limit block; 307. Sealing pad; 308. Vacuum tank. DETAILED DESCRIPTION
[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.
[0024] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.
[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0026] 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.
[0027] See also Figure 1-3The utility model provides an embodiment of a lunch box that is easy to keep warm: a lunch box that is easy to keep warm, including a shell 1, a heating mechanism 2 located at one end of the shell 1, and a box cover 3 located above the top of the shell 1, the shell 1 includes: a containing box 101 arranged inside the shell 1, through which food can be placed, and an insulation groove 102 is arranged between the shell 1 and the containing box 101, so as to keep the containing box 101 warm.
[0028] Please refer to Figure 1 and Figure 2 An electric heating pipe 201 is arranged at the bottom end of the insulation tank 102, and the tap water in the insulation tank 102 can be heated by energizing the electric heating pipe 201. A display screen 202 is arranged on the top of one end of the heating mechanism 2, and the power of the battery in the heating mechanism 2 and the water temperature inside the insulation tank 102 can be displayed through the display screen 202. A liquid inlet and outlet 203 is arranged at the middle position of the top of one end of the shell body 1, which is convenient for replacing the tap water in the insulation tank 102. A sealing plug 204 is arranged at the position of the liquid inlet and outlet 203 at one end of the shell body 1, and the liquid inlet and outlet 203 can be sealed by the sealing plug 204.
[0029] Please refer to Figure 1 and Figure 3 , buckles 301 are provided on both sides of the box cover 3, and fixing blocks 302 are provided at both ends of both sides of the box cover 3. A fixing shaft 303 is provided between the two sets of fixing blocks 302, which penetrates to the top of the buckle 301. The buckle 301 and the box cover 3 can be rotated and flipped by the fixing shaft 303 and the fixing block 302. A slot 304 is provided at the bottom of one side of the buckle 301, and blocks 305 matching the slot 304 are provided on both sides of the shell 1. The buckle 301 and the buckle 305 can be engaged with each other through the slot 304. Limiting blocks 306 are provided at both ends and both sides of the bottom of the box cover 3. The limiting blocks 306 are convenient for installing the box cover 3 on the top of the shell 1. A sealing gasket 307 is provided at the bottom of the box cover 3, and a vacuum groove 308 is provided inside the box cover 3. The sealing gasket 307 makes the box cover 3 and the shell 1 more sealed, thereby making the heat preservation effect of the lunch box better.
[0030] Please refer to Figure 1 and Figure 2The heating mechanism 2 is fixedly connected to the shell 1 by sealant and fixing bolts, and the heating mechanism 2 and the shell 1 can be sealed. The heating mechanism 2 is a sealed and waterproof structure, and the lunch box can be directly washed with water. A temperature control module is arranged inside the heating mechanism 2. A control button is arranged at the bottom of one end of the heating mechanism 2, and the use of the heating mechanism 2 can be controlled. A battery is arranged inside the heating mechanism 2, and the electric heating tube 201 is electrically connected to the battery through an electric wire. The battery can provide power for the use of the electric heating tube 201. A charging port is arranged at the bottom of the heating mechanism 2, and a rubber plug is arranged at the charging port, which can seal the charging port for easy The battery is charged, the inner side of the liquid inlet and outlet 203 is provided with an internal thread, the outer side of the sealing plug 204 is provided with an external thread, the sealing plug 204 is detachably connected to the liquid inlet and outlet 203 through the external thread and the internal thread, the liquid inlet and outlet 203 can be sealed by the sealing plug 204, so as to facilitate the replacement of the water inside the insulation tank 102, the electric heating tube 201 is in an "S" shape structure, a temperature sensor is provided at one end inside the heating mechanism 2, and the temperature sensor penetrates into the insulation tank 102, so as to detect the temperature of the water inside the insulation tank 102, and a sealing ring is provided at one end of the sealing plug 204, so as to facilitate the sealing of the liquid inlet and outlet 203.
[0031] Please refer to Figure 1 and Figure 3 The two ends of the fixed shaft 303 are respectively welded to the fixed block 302, and the fixed shaft 303 is fixedly connected to the box cover 3 through the fixed block 302. The fixed shaft 303 and the box cover 3 can be fixed by the fixed block 302. A rotation hole is provided at the top of the buckle 301, and the fixed shaft 303 passes through the rotation hole. The buckle 301 and the fixed shaft 303 can be rotated through the rotation hole, and the buckle 301 can be turned over for use. The two sets of blocks 305 are respectively connected to the shell 1 The two sides are welded and connected, the buckle 301 is detachably connected to the block 305 through the slot 304, the slot 304 and the block 305 cooperate with each other, the buckle 301 and the shell 1 can be limited, the top of the limit block 306 is welded and connected to the bottom of the box cover 3, a fixing groove is provided at the bottom of the box cover 3, the sealing gasket 307 is detachably connected to the box cover 3 through the fixing groove, the box cover 3 and the shell 1 are sealed by the sealing gasket 307, so that the heat preservation effect of the lunch box is better.
[0032] Working principle: Before using the utility model, the battery inside the heating mechanism 2 is charged using a charger and a charging port, tap water can be injected into the interior of the heat preservation tank 102 through the liquid inlet and outlet 203, and the liquid inlet and outlet 203 is sealed through the sealing plug 204. When in use, the food can be placed inside the holding tank 101, and the water temperature inside the heat preservation tank 102 can be set. The box cover 3 can be limited by the limit block 206, so that the box cover 3 is placed on the top of the shell 1. The buckle 301 and the fixed shaft 303 can be rotated through the rotating hole, and the buckle 301 can be manually turned over through the slot 3 04 The buckle 301 and the buckle 305 can be coordinated with each other to fix the box cover 3 and the shell 1, and the shell 1 and the box cover 3 are sealed by the sealing gasket 307 at the bottom of the box cover 3. The electric heating tube 201 is powered by the battery inside the heating mechanism 2. The electric heating tube 201 generates heat when it is powered on, which can heat the tap water inside the insulation tank 102. The water temperature can be monitored by a stable sensor, and the water inside the insulation tank 102 can be heated in time to maintain the water temperature, so that the food inside the holding box 101 can be continuously kept warm, making the insulation effect of the lunch box better.
[0033] The above is only an embodiment of the utility model, and the common sense such as the known specific structure and characteristics in the scheme is not described too much here. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the utility model. Any figure mark in the claims should not be regarded as limiting the claims involved.
Claims
1. A lunch box that is easy to keep warm, characterized by: The invention comprises a shell (1), a heating mechanism (2) located at one end of the shell (1), and a box cover (3) located above the top of the shell (1), wherein the shell (1) comprises: A containing box (101) is arranged inside the shell (1), and a heat preservation tank (102) is arranged between the shell (1) and the containing box (101); An electric heating pipe (201) is arranged at the bottom of the interior of the heat preservation tank (102), a display screen (202) is arranged at the top of one end of the heating mechanism (2), a liquid inlet and outlet (203) is arranged at the middle position of the top of one end of the shell (1), and a sealing plug (204) is arranged at the position of the liquid inlet and outlet (203) at one end of the shell (1); Buckles (301) are provided on both sides of the box cover (3), fixed blocks (302) are provided at both ends of both sides of the box cover (3), a fixed shaft (303) is provided between two groups of fixed blocks (302) and penetrates to the top of the inner part of the buckle (301), a clamping groove (304) is provided at the bottom of one side of the buckle (301), and clamping blocks (305) matching the clamping groove (304) are provided on both sides of the shell (1), limiting blocks (306) are provided at both ends and both sides of the bottom of the box cover (3), a sealing gasket (307) is provided at the bottom of the box cover (3), and a vacuum groove (308) is provided inside the box cover (3).
2. A lunch box that is easy to keep warm according to claim 1, characterized in that: The heating mechanism (2) is fixedly connected to the housing (1) by means of a sealant and fixing bolts, and the heating mechanism (2) is a sealed and waterproof structure. A temperature control module is arranged inside the heating mechanism (2), and a control button is arranged at the bottom of one end of the heating mechanism (2).
3. A lunch box that is easy to keep warm according to claim 1, characterized in that: A storage battery is arranged inside the heating mechanism (2); the electric heating tube (201) is electrically connected to the storage battery via an electric wire; a charging port is arranged at the bottom of the heating mechanism (2), and a rubber plug is arranged at the charging port.
4. A lunch box that is easy to keep warm according to claim 1, characterized in that: The inner side of the liquid inlet and outlet (203) is provided with an internal thread, and the outer side of the sealing plug (204) is provided with an external thread. The sealing plug (204) is detachably connected to the liquid inlet and outlet (203) via the external thread and the internal thread.
5. The lunch box for heat preservation according to claim 1, characterized in that: The electric heating tube (201) has an "S"-shaped structure, a temperature sensor is provided at one end inside the heating mechanism (2), and the temperature sensor penetrates into the interior of the heat preservation tank (102), and a sealing ring is provided at one end of the sealing plug (204).
6. A lunch box that is easy to keep warm according to claim 1, characterized in that: The two ends of the fixed shaft (303) are respectively welded to the fixed block (302), and the fixed shaft (303) is fixedly connected to the box cover (3) through the fixed block (302). A rotation hole is provided at the top end of the buckle (301), and the fixed shaft (303) passes through the rotation hole.
7. The lunch box for heat preservation according to claim 1, characterized in that: The two groups of the clamping blocks (305) are respectively welded to the two sides of the housing (1), and the buckle (301) is detachably connected to the clamping block (305) via the clamping slot (304).
8. The lunch box for heat preservation according to claim 1, characterized in that: The top end of the limit block (306) is welded to the bottom end of the box cover (3), a fixing groove is provided at the bottom of the box cover (3), and the sealing gasket (307) is detachably connected to the box cover (3) via the fixing groove.