CN205456757U - Based on active heat preservation lunch -box of phase change material - Google Patents

Abstract

The utility model provides a based on active heat preservation lunch -box of phase change material, passes through the heat preservation of phase change material constant temperature heat release and battery initiative heating realization meal, mainly includes constitutions such as box body, phase -change thermal material, battery, heating plate, heat insulation layer, switch, USB interface. When this lunch -box uses, can at first store the heat with boiling water heating melting phase -change thermal material, pour out the boiling water afterwards, add the meal, phase change material phase transition process is felt relieved for the meal heating, simultaneously, adopts battery initiative heating as required, and the battery adopts the USB interface. The utility model discloses keep the constant temperature of meal with less energy consumption, have practicality, energy -conserving and advantage such as conveniently.

Description

An active thermal insulation lunch box based on phase change materials

technical field

The utility model relates to a lunch box, in particular to an active thermal insulation lunch box based on phase change materials.

Background technique

Insulated lunch box is an important tableware in daily life, especially for students, office workers and travelers to provide a great convenience for warm meals. The thermal insulation lunch box realizes the thermal insulation of meals through certain thermal insulation measures or supplementary external heat sources. At present, different types of insulated lunch boxes have appeared on the market, but the design of the products is rarely considered from the perspective of energy saving. At the same time, most of the products are passively heated after cooling.

Utility model content

The technical problem to be solved by the utility model is to provide an active thermal insulation lunch box based on a phase change material that uses a phase change material as a heat storage medium and combines active heating with a battery to maintain the temperature of food with less energy consumption.

In order to solve the above-mentioned technical problems, a box cover and a box body are included. A thermal insulation layer is arranged around and at the bottom of the box body. An inner container is provided in the middle of the box body. Filling between the thermal insulation layer and the inner container There is a phase-change material layer, and an electric heating sheet is arranged in the phase-change material layer, and the electric heating sheet is powered by a storage battery arranged on the box body.

A handle is connected to the outside of the box body, and the storage battery is installed in the middle of the handle, and a USB charging port is arranged on the storage battery. The heating plate is connected to the storage battery through a wire, and a switch is installed on the wire.

The electric heating sheet is arranged at the bottom of the liner.

The inner container is a transparent glass inner container.

The phase change material layer is a solid-liquid phase change material layer.

The active heat preservation lunch box based on the phase change material adopts the above technical solution. First, the phase change material is heated and melted with boiling water, and the melting condition can be observed through the glass liner. The lid is tight, and the thermal insulation layer of the thermal insulation lunch box will minimize heat loss. At the same time, the melted phase change material will release latent heat to heat the food at a constant temperature, because the melting point of the selected phase change material is at 60°C Left and right, the lower temperature difference between the lunch box and the environment reduces heat loss. If the heat preservation time is longer, the user can turn on the switch on the handle, and the electric energy of the battery is converted into heat by the heating sheet to actively heat the bottom of the lunch box. For convenience, the storage battery adopts a USB interface, and the user can use mobile power sources, cars and computers to charge the storage battery. The utility model has the advantages of simple structure, convenience and practicality, and energy saving.

To sum up, the utility model is a practical, energy-saving and convenient thermal insulation lunch box based on phase-change materials releasing latent heat to heat the lunch box under constant temperature conditions, and using batteries to actively heat meals as needed.

Description of drawings

Fig. 1 is the structural representation of the utility model.

detailed description

Below in conjunction with accompanying drawing, the utility model is further described.

Referring to Fig. 1, an active thermal insulation lunch box based on phase change materials provided by the utility model includes a box cover 1 and a box body 2, and a thermal insulation layer 3 is arranged around and at the bottom of the box body 2, and the box body 2 There is a glass liner 4 in the center of the body 2, and a solid phase change material 5 is filled between the thermal insulation layer 3 and the glass liner 4, and the box body 2 is connected with a handle 6, and the middle of the handle 6 is A storage battery 7 is installed, the storage battery 7 has a USB interface 8, a heating sheet 11 is arranged in the phase change material 5, the heating sheet 11 is connected with the storage battery 7 by a wire 9, and the wire 9 is installed A switch 10 .

Working principle, referring to Figure 1, at the beginning, pour boiling water into the glass liner 4 to completely melt the solid phase change material 5, then pour out the boiling water, add food, and close the lid 1 tightly, and then turn on the switch 10 as required , accumulator 7 outputs current through wire 9, is converted into the meal in the heat heating glass liner 4 by heating plate 11, and heat-insulating layer 3 stops the heat exchange of lunch box and environment, and finally, after holding time finishes, switch off switch 10. When the electric quantity in the storage battery 7 is not much, connect the power supply and the USB interface 8 of the storage battery 7 to charge the storage battery 7 through the data line.

Claims (6)

1. one kind based on phase-change material active heat-insulating lunch box, including lid and box body, it is characterized in that: surrounding and bottom in described box body are disposed with thermal insulating warm-keeping layer, and the middle part of described box body is provided with an inner bag, is filled with phase-change material layers between described thermal insulating warm-keeping layer and inner bag.

It is the most according to claim 1 based on phase-change material active heat-insulating lunch box, it is characterised in that: being provided with electric heating sheets in described phase-change material layers, described electric heating sheets is by the storage battery power supply being arranged on box body.

The most according to claim 2 based on phase-change material active heat-insulating lunch box, it is characterized in that: outside described box body, connect a handle, described accumulator is installed in the middle of described handle, a USB charge port it is provided with in described accumulator, described heating plate is connected by wire with accumulator, and described wire is installed a switch.

4. according to one of claim 2 to 3 Suo Shu based on phase-change material active heat-insulating lunch box, it is characterised in that: described electric heating sheets is arranged on the bottom of inner bag.

It is the most according to claim 4 based on phase-change material active heat-insulating lunch box, it is characterised in that: described inner bag is clear glass inner bag.

It is the most according to claim 5 based on phase-change material active heat-insulating lunch box, it is characterised in that: described phase-change material layers is solid-liquid phase change material layer.