CN217695501U - Heat-insulation lunch box - Google Patents

Abstract

The utility model relates to a heating device, concretely relates to heat preservation lunch-box, including lunch-box lid (1), lunch-box body (2), inner bag (3) and zone of heating (4), lunch-box body (2) are formed with the inner bag that can place inner bag (3) and zone of heating (4) and hold the chamber, zone of heating (4) are including graphite alkene zone of heating (41) and graphite bubble cotton (42), graphite alkene zone of heating (41) are connected with the power and inlay in graphite bubble cotton (42), zone of heating (4) and the inner bag hold the lateral wall in chamber and bottom be connected, in order to form the heating chamber that can hold inner bag (3), the size in heating chamber is less than the size of inner bag (3), in order when putting into the heating chamber in inner bag (3), graphite bubble cotton (42) in zone of heating (4) can produce elastic deformation, make zone of heating (4) closely laminate with inner bag (3). The utility model discloses a heat preservation lunch-box can realize the dismantlement of inner bag and make things convenient for the washing of inner bag, and can guarantee the homogeneity of heating.

Description

Heat-insulation lunch box

Technical Field

The utility model relates to a heating heat preservation device specifically relates to a heat preservation lunch-box.

Background

Along with the safety and health of people in hard diet, more and more people tend to take meals from home to ensure the health and safety of food and save certain lunch expenses.

However, most of the existing lunch boxes for containing food do not have a heating function, so that inconvenience is brought to quick and convenient heating and heat preservation of food, and people often feel inconvenient especially when going out for travel or carrying food to work and the like.

At present, some electric food heating appliances such as microwave ovens, electromagnetic ovens, electric cookers, electric water heaters and the like exist, and the electric appliance products are large in size and inconvenient to carry; moreover, the existing food electric heater product has the following defects: although the electric heater adopting the traditional 220v alternating current power supply heating wire direct supply heating mode can realize the electric heating effect, the electric heater often has serious local overheating and can not heat food uniformly; the electric energy consumption is high, and long-time uniform heat preservation is not easy to achieve; the common steam heating lunch box needs to be heated after water is injected into the bottom of the box and is boiled, and the water steam flows back to the meal, so that the taste is easily influenced, and the meal generates pungent smell; in addition, although some small electric heaters with low voltage and low power have better portability and can ensure the uniformity of heating or heat preservation, the inner containers of the electric heaters are not convenient to disassemble and clean, and a lot of inconvenience is caused in use.

In view of the above, a heat preservation lunch box needs to be designed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a heat preservation lunch-box is provided, its dismantlement that can realize the inner bag makes things convenient for the washing of inner bag, and can guarantee the homogeneity of heating.

In order to solve the technical problem, the utility model provides a heat preservation lunch-box, including lunch-box lid, lunch-box body, inner bag and zone of heating, lunch-box body is formed with and can places the inner bag with the inner bag of zone of heating holds the chamber, the zone of heating includes that graphite zone of heating and graphite bubble are cotton, graphite zone of heating be connected with the power and inlay in graphite bubble is cotton, the zone of heating with the inner bag holds the lateral wall and the bottom in chamber and is connected to form to holding the heating chamber of inner bag, the size in heating chamber is less than the size of inner bag, with the inner bag is put into during the heating chamber, graphite bubble in the zone of heating is cotton can produce elastic deformation, makes the zone of heating with the inner bag closely laminates.

Specifically, the graphite foam comprises a graphite layer, an elastic foam layer and an insulating protective layer used for wrapping the graphite layer and the elastic foam layer, the graphite layer is close to the inner container, and the elastic foam layer is far away from the inner container.

Further specifically, the graphene heating layer is embedded in the graphite layer.

Preferably, a heat insulation layer is further arranged between the elastic foam layer and the graphite layer.

Optionally, the heating layer is glued to the rice box body.

Optionally, be equipped with lid buckle structure on the lunch-box lid, be equipped with the box body on the lunch-box body and stop the structure, with can pass through lid buckle structure with the cooperation that the structure was stopped to the box body is realized the lunch-box lid with lunch-box body's connection.

Preferably, the thickness of graphite alkene zone of heating is 0.3mm to 0.5mm, the graphite alkene zone of heating includes polyimide film basic unit and the electrically conductive printing ink heat-conducting layer of aqueous graphite alkene, just the operating temperature of the electrically conductive printing ink heat-conducting layer of aqueous graphite alkene sets up to 60 ℃ to 100 ℃.

Further preferably, an electrode is arranged on the graphene heating layer, the electrode is connected with the power supply through a wire, a power adapter is connected between the power supply and the electrode in series, and the output voltage of the power adapter is less than or equal to 36V.

Further preferably, a temperature sensor is arranged in the lunch box cover, a controller is also connected in series between the power supply and the electrode, and the temperature sensor is electrically connected with the controller so as to emit an electric signal to the controller through the temperature sensor when the meal reaches a set temperature and adjust the output power of the power adapter to be set heat preservation power through the controller.

Further preferably, the rice box body is of a high-temperature resistant plastic structure; the inner side of the inner container is provided with a food-grade ceramic coating.

Through the technical scheme, in the heat-preservation lunch box provided by the utility model, the box body of the heat-preservation lunch box forms the inner container accommodating cavity which can accommodate the inner container and the heating layer, the heating layer is connected with the side wall and the bottom of the inner container accommodating cavity, the heating layer can be connected with the bottom and the side wall of the inner container, and the bottom and the side wall of the inner container can heat food in the inner container, so that the food can be heated more uniformly and rapidly; the inner container and the lunch box body (and the heating layer) are arranged in a split mode, so that the inner container can be conveniently detached and taken out, the inner container can be conveniently and directly cleaned, and the electric appliance part in the heat-preservation lunch box can be prevented from being damaged when the inner container is cleaned; in addition, the zone of heating comprises graphite alkene zone of heating and graphite bubble cotton, wherein the graphite alkene zone of heating is connected in order being used for generating heat with the power, and graphite bubble cotton can absorb and transmit the heat of graphite alkene zone of heating for the inner bag, and graphite bubble cotton self has certain elastic deformation's ability, therefore, the size that surrounds the heating chamber that forms with the zone of heating sets up to the size that is less than the inner bag, can make the inner bag when putting into the heating chamber, thereby the zone of heating can be put into by inner bag extrusion attenuation convenience inner bag, and the elasticity that its deformation produced can make zone of heating and inner bag closely laminate, thereby guarantee the reliability of heat transfer between zone of heating and the inner bag.

Further advantages of the invention, as well as the technical effects of preferred embodiments, will be further elucidated in the following detailed description.

Drawings

FIG. 1 is a schematic structural view of an embodiment of the heat-preservation lunch box of the present invention;

FIG. 2 is a top view of the lunch box body and the heating layer according to an embodiment of the heat preservation lunch box of the invention;

FIG. 3 isbase:Sub>A sectional view taken along line A-A of FIG. 2;

fig. 4 is a sectional view of the heating layer in the heat-preservation lunch box of the utility model.

Description of the reference numerals

1-lunch box cover 2-lunch box body

3-inner container 4-heating layer

41-graphene heating layer 42-graphite foam

421-graphite layer 422-elastic foam layer

423-insulating protective layer 5-conductor

6-power adapter

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.

It should be noted that, unless expressly stated otherwise and limited, the terms "mounted," "disposed," and "connected" are to be construed broadly and encompass, for example, a fixed connection, a removable connection, and an integral connection; either directly or indirectly through intervening media, either internally or in any combination thereof. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

As shown in fig. 1, 2 and 3, as an embodiment of the heat preservation lunch box provided by the present invention, the heat preservation lunch box comprises a lunch box cover 1, a lunch box body 2, an inner container 3 and a heating layer 4, wherein, as shown in fig. 3, the lunch box body 2 is formed with an inner container accommodating cavity capable of accommodating the inner container 3 and the heating layer 4; the heating layer 4 specifically comprises a graphene heating layer 41 and graphite foam 42, wherein the graphene heating layer 41 is connected with a power supply to generate heat, the graphene heating layer 41 is embedded in the graphite foam 42, and the graphite foam 42 can absorb the heat generated by the graphene heating layer 41 to transfer the heat to the inner container 3 and can generate certain elastic deformation; the heating layer 4 can be preferably designed as shown in fig. 2 and 3 to be connected with the side wall and the bottom of the inner container accommodating cavity so as to form a heating cavity capable of accommodating the inner container 3, and the size of the heating cavity is smaller than that of the inner container 3, so that when the inner container 3 is placed into the heating cavity, the graphite foam 42 in the heating layer 4 can generate elastic deformation, the inner container 3 is conveniently placed into the heating cavity, and after the inner container 3 is placed into the heating cavity, the heating layer 4 can be tightly attached to the inner container 3 under the action of the graphite foam 42, so that the reliability of heat transfer is ensured.

Through the technical scheme, the heat-preservation lunch box provided by the utility model is characterized in that the lunch box body 2 of the heat-preservation lunch box forms an inner container accommodating cavity which can accommodate the inner container 3 and the heating layer 4, the heating layer 4 is connected with the side wall and the bottom of the inner container accommodating cavity, and the heating layer 4 can be connected with the bottom and the side wall of the inner container 3, so that the bottom and the side wall of the inner container 3 can heat the dishes in the inner container 3, and the dishes can be heated more uniformly and rapidly; the inner container 3 and the lunch box body 2 (and the heating layer 4) are arranged in a detachable way, so that the inner container 3 in the lunch box body 2 can be conveniently taken out, the inner container 3 can be directly cleaned, and the heat-preservation lunch box is prevented from being damaged by water invasion when the inner container 3 is cleaned; in addition, zone of heating 4 comprises graphite alkene zone of heating 41 and graphite bubble cotton 42, wherein graphite alkene zone of heating 41 is connected with the power in order to be used for generating heat, and graphite bubble cotton 42 can absorb and transmit the heat of graphite alkene zone of heating 41 for inner bag 3, and graphite bubble cotton 42 self has certain elastic deformation's ability, therefore, the size that surrounds the heating chamber that forms with zone of heating 4 sets up to the size that is less than the inner bag, can make the inner bag when putting into the heating chamber, thereby zone of heating 4 can be by the 3 extrusion thinnings of inner bag make things convenient for putting into of inner bag 3, and the elasticity that zone of heating 4 deformation produced can make zone of heating 4 and inner bag 3 closely laminate, thereby guarantee the reliability of heat transfer between zone of heating 4 and the inner bag 3.

Further, in an embodiment of the heat preservation lunch box provided by the present invention, as shown in fig. 4, the graphite foam 42 may specifically include a graphite layer 421, an elastic foam layer 422, and an insulating protection layer 423 for wrapping the graphite layer 421 and the elastic foam layer 422, graphite powder is preferably filled in the graphite layer 421, and it should be noted that, in order to prevent the graphite powder in the graphite layer 421 from mixing into the elastic foam layer 422, a film interlayer may be disposed between the elastic foam layer 422 and the graphite layer 421, or the graphite layer 421 is sealed by a film material, and the film interlayer or the film material needs to be able to withstand high temperature; particularly, when the heating layer 4 is arranged, the graphite layer 421 should be arranged close to the inner container 3, and the elastic foam layer 422 should be arranged far from the inner container 3, so as to ensure the speed and thermal efficiency of heat transfer by utilizing the good heat conduction performance of graphite and the good heat insulation performance of elastic foam; it can be understood that, because the heating layer 4 connected to the bottom of the inner container accommodating cavity can be tightly attached to the inner container 3 under the action of the gravity of the inner container 3 and the food itself, the heating layer 4 connected to the bottom of the inner container accommodating cavity can be only a graphene heating layer 41.

Further, in the utility model provides an embodiment of heat preservation lunch-box, as shown in fig. 4, graphite alkene zone of heating 41 should inlay in graphite layer 421, with can absorb graphite alkene zone of heating 41's heat through graphite layer 421, and further heat inner bag 3 through graphite alkene zone of heating 41, and hold zone of heating 4 that the chamber lateral wall is connected and hold the zone of heating 4 that the chamber bottom is connected with the inner bag and can set up to split type structure, the zone of heating 4 of above-mentioned two parts is connected with the power respectively with parallelly connected mode, or as shown in fig. 2 and fig. 3, hold the extension graphite alkene heating structure that many equidistant distributions outwards extend of graphite alkene zone of heating 41 in the zone of heating 4 that the chamber bottom is connected with the inner bag, this extension graphite alkene heating structure upwards extends, and the embedded zone of heating 4 that holds the chamber lateral wall and hold the zone of heating 4 that the chamber bottom is connected with the inner bag in order to be regarded as its graphite alkene zone of heating, thereby can make and hold the zone of heating 4 that the chamber lateral wall is connected with the inner bag to set up to a body structure, and be connected with the mode of heating with the series connection, thereby can simplify circuit arrangement.

Further, in an embodiment of the heat preservation lunch box provided by the present invention, a thermal insulation layer is further disposed between the elastic foam layer 422 and the graphite layer 421, generally, because the normal emissivity of graphite powder is inferior to that of the graphene heating layer 41, the graphite layer 421 can radiate a large amount of heat to the elastic foam layer 422, therefore, in order to prevent the temperature at the elastic foam layer 422 from being too high, the structure in the elastic foam layer 422 is damaged to make the elastic foam layer 422 lose elasticity, the thermal insulation layer can be preferably disposed between the elastic foam layer 422 and the graphite layer 421, so as to ensure the service life of the elastic foam layer 422, and ensure that the heating layer 4 and the inner container 3 are tightly attached; in addition, the thermal insulation layer can prevent heat from being transferred to the lunch box body 2, so that the situation that a user is scalded or the structure is deformed due to overheating of the lunch box body 2 can be prevented; can adopt the mode of splicing to be connected between zone of heating 4 and the lunch box body 2, and the viscose between zone of heating 4 and the lunch box body 2 can preferably adopt high temperature resistant glue to prevent that the glue inefficacy from leading to zone of heating 4 and lunch box body 2 to be connected insecurely, and the insulating layer can further prevent heat transfer to sticky department, thereby can further guarantee the reliability of connecting.

Further, in an embodiment of the heat preservation lunch box provided by the utility model, be equipped with lid buckle structure on lunch-box lid 1, and lunch-box body 2 is last be equipped with lid buckle structure assorted box body card structure to can realize lunch-box lid 1 and lunch-box body 2's being connected through lid buckle structure and the cooperation that the structure was blocked to the box body. The lunch box body 2 and the lunch box cover 1 are connected in a clamping manner, the lunch box cover 1 and the lunch box body 2 can be completely separated, so that the inner container 3 can be conveniently taken out for cleaning, a sealing element can be arranged between the lunch box cover 1 and the lunch box body 2, a sealing space is formed after the lunch box cover 1 and the lunch box body 2 are connected, heat loss during heating of dishes is reduced, the taste of the dishes can be prevented from escaping, the sealing element between the lunch box cover 1 and the lunch box body 2 can only be extruded and deformed in the connecting process of the lunch box cover 1 and the lunch box body 2 in the clamping connection manner, and torsional deformation can not be generated, so that the sealing performance can be ensured, and the service life of the sealing element can be ensured; both the lunch box cover 1 and the lunch box body 2 can be made of high temperature resistant plastics.

Further, in an embodiment of the heat preservation lunch box provided by the utility model, the thickness of graphite alkene zone of heating 41 can be set to 0.3mm to 0.5mm, graphite alkene zone of heating 41 includes polyimide film basic unit and the electrically conductive printing ink heat-conducting layer of aqueous graphite alkene, be equipped with the electrode on the graphite alkene zone of heating 41, the electrode passes through wire 5 and is connected with the power, so as to realize the power supply to graphite alkene zone of heating 41, and can prefer to establish ties between power and electrode and have power adapter 6, the output voltage of power adapter 6 should preferably set up to less than or equal to 36 volts, so as to convert common 220V commercial power into the less voltage of harm to the human body, for example, realize the power supply to graphite alkene zone of heating 41 with the mode of USB connection, the output voltage of power adapter 6 is 5V; or the USB connection line is directly connected to a 12V or 24V low voltage power supply such as a vehicle power supply, so as to supply power to the graphene heating layer 41, and the power of the graphene heating layer 41 in the heat preservation lunch box can be set to 30W to 100W, for example, the power can be set to 48W in the heat preservation state, and can be set to 96W in the heating state, so as to maintain the working temperature of the aqueous graphene conductive ink heat conduction layer at 60 ℃ to 100 ℃, for example, the working temperature of the aqueous graphene conductive ink heat conduction layer at 80 ℃ to 100 ℃ in the heating state, and the working temperature of the aqueous graphene conductive ink heat conduction layer at 60 ℃ to 70 ℃ in the heat preservation state.

Specifically, in an embodiment of the heat-insulating lunch box provided by the present invention, the duration of the heating state of the heat-insulating lunch box can be determined by the temperature of the meal, specifically, a temperature sensor can be disposed in the lunch box cover 1, and a controller is disposed in series between the power supply and the electrode, the temperature sensor is electrically connected to the controller, so as to transmit an electrical signal to the controller via the temperature sensor when the meal (i.e. the temperature sensor) reaches a set temperature (e.g. 55 ℃), and adjust the output power of the power adapter 6 to a set heat-insulating power via the controller, so that the heat-insulating lunch box enters the heat-insulating state; it can be understood that if the lunch box cover 1 and the lunch box body 2 are connected in a clamping manner, a wireless connection mode is preferably selected between the temperature sensor arranged in the lunch box cover 1 and the controller; if adopt the form that joint and articulated combined together (thereby the form that lunch-box lid 1 can rotate along the hinge department and realize the heat preservation lunch-box and open) between lunch-box lid 1 and the lunch-box body 2, then optional wired connection's mode realizes the electricity between the temperature sensor that sets up in lunch-box lid 1 and the controller and is connected, and the electric wire can extend to in the lunch-box body 2 through the hinge department in following lunch-box lid 1 to be connected with the controller.

Further, the utility model provides an in the embodiment of heat preservation lunch-box, the inboard of inner bag 3 is equipped with food level ceramic coating, and this coating can prevent that the meal from adhering to inner bag 3 on to can make things convenient for the washing of inner bag.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto. In the technical idea scope of the present invention, it is possible to provide the technical solution of the present invention with a plurality of simple modifications, including combining each specific technical feature in any suitable manner, and in order to avoid unnecessary repetition, the present invention does not provide additional description for various possible combinations. However, these simple modifications and combinations should also be considered as disclosed in the present invention, and all fall within the scope of protection of the present invention.

Claims (10)

1. The utility model provides a heat preservation lunch-box, a serial communication port, including lunch-box lid (1), lunch-box body (2), inner bag (3) and zone of heating (4), lunch-box body (2) are formed with and can place inner bag (3) with the inner bag of zone of heating (4) holds the chamber, zone of heating (4) are including graphite zone of heating (41) and graphite bubble cotton (42), graphite zone of heating (41) are connected with the power and inlay in graphite bubble cotton (42), zone of heating (4) with the inner bag holds the lateral wall and the bottom in chamber and is connected, in order to form to hold the heating chamber of inner bag (3), the size in heating chamber is less than the size of inner bag (3), in order inner bag (3) are put into during the time, graphite bubble cotton deformation (42) in zone of heating (4) can produce elastic deformation, make zone of heating (4) with inner bag (3) closely laminate.

2. The heat-preservation lunch box according to claim 1, characterized in that the graphite foam (42) comprises a graphite layer (421), an elastic foam layer (422) and an insulating protective layer (423) for wrapping the graphite layer (421) and the elastic foam layer (422), wherein the graphite layer (421) is arranged close to the inner container (3), and the elastic foam layer (422) is arranged far away from the inner container (3).

3. The lunch box according to claim 2, characterised in that the graphene heating layer (41) is embedded in the graphite layer (421).

4. The heat-preservation lunch box according to claim 3, characterized in that a heat-insulation layer is further arranged between the elastic foam layer (422) and the graphite layer (421).

5. An insulating lunch box according to any one of claims 2-4, characterised in that the heating layer (4) is glued to the lunch box body (2).

6. The heat-preservation lunch box according to claim 5, characterized in that a box cover buckling structure is arranged on the lunch box cover (1), and a box body clamping structure is arranged on the lunch box body (2), so that the lunch box cover (1) and the lunch box body (2) can be connected through the matching of the box cover buckling structure and the box body clamping structure.

7. The heat-preservation lunch box according to claim 6, characterized in that the thickness of the graphene heating layer (41) is 0.3mm to 0.5mm, the graphene heating layer (41) comprises a polyimide film base layer and an aqueous graphene conductive ink heat conduction layer, and the operating temperature of the aqueous graphene conductive ink heat conduction layer is set to 60 ℃ to 100 ℃.

8. The heat-preservation lunch box according to claim 7, characterized in that an electrode is arranged on the graphene heating layer (41), the electrode is connected with the power supply through a wire (5), a power adapter (6) is connected in series between the power supply and the electrode, and the output voltage of the power adapter (6) is less than or equal to 36V.

9. The lunch box as claimed in claim 8, characterized in that a temperature sensor is arranged in the lunch box cover (1), a controller is connected in series between the power supply and the electrode, and the temperature sensor is electrically connected with the controller so as to transmit an electric signal to the controller via the temperature sensor when the meal reaches a set temperature and adjust the output power of the power adapter (6) to a set insulation power via the controller.

10. A heat-preservation lunch box according to claim 9, characterized in that the lunch box body (2) is of a high-temperature-resistant plastic structure; the inner side of the inner container 3 is provided with a food-grade ceramic coating.

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