CN218869616U

CN218869616U - Electric heating lunch box

Info

Publication number: CN218869616U
Application number: CN202223453201.6U
Authority: CN
Inventors: 李建生
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-12-23
Filing date: 2022-12-23
Publication date: 2023-04-18
Anticipated expiration: 2032-12-23

Abstract

The utility model discloses an electric heat lunch-box, including box body and lid, the lid lock sets up on the box body, and the box body is provided with heating device, and heating device includes power, temperature controller, pressure switch and heating plate, and pressure switch sets up in the box body bottom, and pressure switch is connected with power and temperature controller electricity, and the heating plate is connected with the temperature controller electricity. The electric heating lunch box can automatically start the heating and heat preservation functions when food is put in, and can automatically cut off the power supply after the food is taken out, thereby preventing the heating device from wasting energy due to dry burning.

Description

Electric heating lunch box

Technical Field

The utility model relates to a heat preservation lunch-box technical field, concretely relates to electric heat lunch-box.

Background

The lunch box is a common daily use article in life and is mainly applied to containing food such as meal, soup and the like. With the acceleration of the pace of life, office workers and the like need to use lunch boxes to carry lunch in order to save time and eat more suitable for the appetite of the workers outside one day, and the problem to be solved is that the lunch boxes are used for heat preservation and heating. The existing lunch box with the self-heating function can realize the heating and heat preservation functions of meals, but the lunch box is provided with a switch on the box body or needs an external power supply, needs to manually turn on the switch or a plug to connect a power supply, can realize the functions of heat preservation and heating of food, and has the problem that after the food is taken out, the switch is not turned off in time, so that the lunch box is dried and burned, and the energy is wasted. Meanwhile, if the power supply is not connected in time, the food is cooled, and the taste of the food is also affected.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an electric heat lunch-box, this electric heat lunch-box put into food and can open the heating heat preservation function automatically, can automatic disconnection power again after taking out food, prevents that heating device from burning futilely and causing the waste of the energy.

In order to achieve the purpose, the utility model adopts the following technical proposal:

the utility model provides an electric heating lunch box, includes box body and lid, the lid lock sets up on the box body, the box body is provided with heating device, heating device includes power, temperature controller, pressure switch and heating plate, pressure switch sets up in the box body bottom, pressure switch is connected with power and temperature controller electricity, the heating plate is connected with the temperature controller electricity.

Preferably, the power is the battery, the bottom of box body is provided with the battery compartment, place the battery in the battery compartment, the battery compartment is provided with and is used for the USB interface for battery charging.

Preferably, the box body is provided with a plug, the pressure switch is electrically connected with the plug, the plug can be connected to an external power supply, and a wire coil wound with a wire is arranged around the plug.

Preferably, the box body is composed of a shell, a heat preservation layer and an inner wall, and the heat preservation layer is located between the shell and the inner wall.

Preferably, the box cover is a heat preservation cover, and the box cover is hinged with the box body.

Preferably, the box body is further provided with a handle.

Among the above-mentioned technical scheme, the electric heat lunch-box includes box body and lid, is equipped with heating device on the box body, and heating device includes temperature controller, heating plate, power and pressure switch, and pressure switch is connected with power and temperature controller electricity, and the heating plate is connected with the temperature controller electricity. The temperature controller can control the heating sheet to work so as to keep the proper heat preservation and heating temperature in the lunch box. The pressure switch is arranged at the bottom of the box body, after food is placed in the lunch box, the gravity of the food is transmitted to the pressure switch to trigger the switch to be turned on, so that the heating device is powered on, the heating sheet starts to work, and the inside of the lunch box is heated or insulated. When the food is taken out, the pressure switch loses pressure and is automatically disconnected, so that the heating device is disconnected from the power supply and stops working, and the situation that the food is still in a continuous heating state when no food exists in the lunch box, the energy waste is caused, and the service life of the heating sheet is influenced is avoided. Be equipped with the battery compartment bottom the box body, can place the battery as the power of electric heat lunch-box, the battery compartment is provided with the USB interface that charges for the battery, still is provided with wire and plug simultaneously and is used for connecting external power source, and built-in battery can make the use place of lunch-box unrestricted, does not have external power source's the condition such as picnic or outdoor operations, and the homoenergetic guarantees to eat the food that has the temperature. The wire and the plug are connected with an external power supply to replace a storage battery to provide energy, so that the working time of the storage battery is reduced, and the service life of the storage battery is further prolonged. Meanwhile, the heat preservation and heating functions of the lunch box cannot be influenced due to insufficient electric quantity of the storage battery.

Drawings

FIG. 1 is a schematic sectional view of the structure of the electric heating lunch box.

In the figure, 1, a box body; 2, covering the box; 3, a battery compartment; 4, a pressure switch; 5, a USB interface; 6, plugging; 7, winding disc; 8, temperature controller; 9, a handle; 10 heating the sheet.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings:

as shown in figure 1, the electric heating lunch box comprises a box body 1 and a box cover 2, wherein the box body 1 consists of a shell 101, an insulating layer 102 and an inner wall 103, so that the box body has a self-heat-preservation function. The box body 1 is internally provided with a heating device which comprises a pressure switch 4, a temperature controller 8, a heating plate 10 and a power supply. The bottom of box body 1 is equipped with battery compartment 3, places the battery as the power in the battery compartment 3, and battery compartment 3 is equipped with the USB interface 5 that is used for storage battery charging, and pressure switch 4 is connected with battery and temperature controller 8 electricity, and heating plate 10 is connected with 8 electricity of temperature controller, and pressure switch 4 sets up in the bottom of box body 1, and when no food in the box body 1, pressure switch 4 is in the off-state, and when putting into food in the box body 1, pressure switch 4 is triggered and opens. The temperature controller 8 controls the heating sheet 10 to work, and controls the heat preservation and heating temperature in the lunch box. In a preferred case, a plug 6 is further provided on the outer side of the box body 1, the plug 6 is electrically connected with the pressure switch 4, and the plug 6 can be connected with an external power supply to enable the heating device to work normally. A coil 7 is also arranged near the plug 6, and the coil 7 is used for winding the connecting wires of the plug 6. The box cover 2 is a heat preservation box cover, the box cover 2 is connected with the box body 1 in a hinged mode, and the box body 1 is further provided with a handle 9, so that the lunch box is convenient to carry. In a preferred embodiment, the electrically heated lunch box is provided with a tin foil paper bag (not shown in the diagram) for containing food, keeping the food clean and sanitary, avoiding the trouble of washing the tableware, and avoiding short circuit of the heating device when the heating device is in contact with water.

When the electric heating lunch box is used, the temperature controller 8 is provided with the heat preservation and heating temperatures of the electric heating lunch box, the box cover 2 is opened, food is placed in the box body 1, the gravity of the food triggers the pressure switch 4 at the bottom of the box body 1 to be opened, the heating sheet 10 starts to work, the set temperature is kept in the lunch box, the heating and heat preservation functions of the food are achieved, and the problem that the food becomes cool and is cooled due to human negligence is effectively solved. After the food is taken out of the box body 1, the pressure switch 4 automatically cuts off the power supply due to pressure loss, the heating plate 10 stops working, and the heating plate 10 in the lunch box is prevented from being burnt dry to cause energy waste and influence on the service life of the heating plate. Under the condition that does not have external power supply, can be the power that uses the battery as the lunch-box, guarantee heating device's normal work, under the condition that the condition allows, use plug connection external power supply, can shorten the operating time of battery and then prolong the life of battery. The electric heating lunch box is provided with a plurality of selectable power supplies for providing energy, so that the use of the electric heating lunch box is not limited by the use environment, and the use scenes of the electric heating lunch box are increased.

The embodiment is only for the illustration of the concept and implementation of the present invention, and is not limited thereto, and the technical solution without substantial transformation is still within the protection scope under the concept of the present invention.

Claims

1. The utility model provides an electric heating lunch box, includes box body and lid, the lid lock sets up on the box body, its characterized in that, the box body is provided with heating device, heating device includes power, temperature controller, pressure switch and heating plate, pressure switch sets up in the box body bottom, pressure switch is connected with power and temperature controller electricity, the heating plate is connected with the temperature controller electricity.

2. The electric heating lunch box of claim 1, wherein the power source is a storage battery, the bottom of the box body is provided with a battery compartment, the storage battery is placed in the battery compartment, and the battery compartment is provided with a USB interface for charging the battery.

3. An electrically heated lunchbox as claimed in claim 1 wherein said body has a plug, said pressure switch is electrically connected to said plug, said plug is connectable to an external power source, and a wire coil is provided around said plug for winding wire.

4. The electrothermal canteen of claim 1, wherein the housing comprises a shell, an insulating layer, and an inner wall, the insulating layer being disposed between the shell and the inner wall.

5. The electrothermal canteen of claim 1, wherein the box cover is a heat-insulating cover, and the box cover is hinged to the box body.

6. The electric lunch box of claim 1, wherein the box body is further provided with a handle.