CN214525736U

CN214525736U - Easy open can with self-protection heating function

Info

Publication number: CN214525736U
Application number: CN202020507282.5U
Authority: CN
Inventors: 李木森
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-04-08
Filing date: 2020-04-08
Publication date: 2021-10-29
Anticipated expiration: 2030-04-08

Abstract

A pop can with a self-protection heating function relates to the technical field of food packaging containers and comprises a can body and a can bottom, wherein the can bottom is provided with a self-protection heating area which is a raised platform and forms a groove with the periphery of the can bottom; the groove is an equivalent heating area; the bottom surface of the self-protection heating zone is a plane, and the bottom surface of the self-protection heating zone is not lower than the bottommost position around the bottom of the tank; the groove bottom is arc-shaped. The utility model discloses production simple process has realized the accuse temperature and the efficiency improvement in the heating process through tank structure's change to can realize the self preservation and protect the heating.

Description

Easy open can with self-protection heating function

Technical Field

The utility model relates to a food packaging container technical field, specific saying so relates to a but easy open can of wireless heating of self preservation protection function in area.

Background

In cold seasons, the food and drink products sold on the market are cool and not suitable for direct use, and therefore, heating is required. At present, common heating modes comprise a heating cabinet, a self-heating beverage container and the like. The heating cabinet has large energy consumption and large occupied area, and is inconvenient to use. At present, most of spontaneous heating containers generate heat in a chemical mode, and potential safety hazards and recycling problems exist. And the container which is partially heated by the resistor occupies a large amount of storage space in the container, and is not practical.

The traditional pop can is made of aluminum or tinplate, belongs to a heat-conducting and electric-conducting material, and can be placed on wireless charging equipment, such as a wireless heating base and the like, so that the heating of the content in the can body can be realized. However, the traditional two-piece pop can base is designed to be a concave spherical surface or the traditional three-piece pop can base is designed to be a straight plane, so that the structure is very stable, the temperature cannot be controlled in the wireless heating process, and potential safety hazards are brought.

SUMMERY OF THE UTILITY MODEL

To the problem, the utility model aims to provide a but take self preservation to protect function wireless heating's easy open can specifically is realized through following technical scheme:

a pop can with a self-protection heating function comprises a can body and a can bottom, wherein the can bottom is provided with a self-protection heating area, and the self-protection heating area is a raised platform and forms a groove with the periphery of the can bottom; the groove is an equivalent heating area; the bottom surface of the self-protection heating zone is a plane, and the bottom surface of the self-protection heating zone is not lower than the bottommost position around the bottom of the tank; the groove bottom is arc-shaped.

In the above technical solution, further, the vertical distance between the bottom surface of the self-protection heating zone and the bottommost position around the tank bottom is 0mm-5 mm.

In the technical scheme, the self-protection heating zone is further arranged in the middle of the bottom of the tank, and the length of the bottom surface is 1/3-2/3 of the diameter of the tank body.

In the above technical solution, further, the vertical distance between the bottom surface of the self-protection heating zone and the bottommost position around the tank bottom is 0.5mm-5 mm.

In the above technical scheme, further, the tank body and the tank bottom are made of aluminum or tinplate.

The beneficial effects of the utility model reside in that: 1. the traditional pop can production method is adopted, only the shape of the can bottom is changed, the change cost is low, and the production is convenient; 2. the self-protection wireless heating is realized, and the product safety is improved. 3 the temperature control and efficiency improvement in the heating process are realized through the change of the tank body structure.

Drawings

FIG. 1 is a schematic view of the heating initial state of the present invention;

FIG. 2 is a schematic diagram of the present invention heating to the maximum power state;

FIG. 3 is a schematic view of the heating temperature equilibrium state of the present invention;

fig. 4 is a schematic view of the overheat protection state of the present invention;

fig. 5 is a schematic diagram of the temperature change in the use process of the present invention.

In the figure, 1-self-protection heating zone, 2-equivalent heating zone and 3-wireless heating equipment.

Detailed Description

To further describe the specific contents of the present invention, the present invention will be further described in detail with reference to the attached drawings.

Use as shown in figure 1, the utility model discloses carry out structural improvement to traditional easy open can tank bottoms: the middle position of the tank bottom is provided with a self-protection heating zone 1. The self-protection heating area 1 is a raised platform and forms a groove with the periphery of the tank bottom; the groove is an equivalent heating area 2; the bottom surface of the self-protection heating zone 1 is a plane, and the length of the bottom surface is 1/3-2/3 of the diameter of the can body. The vertical distance between the bottom surface of the self-protection heating zone 1 and the bottommost position around the tank bottom is 0-5 mm; the groove bottom is arc-shaped. The pop can is made of aluminum and other metal materials and is integrally formed.

The bottom surface of the self-protection heating zone 1 is preferably designed to be slightly higher than the bottommost position around the bottom of the tank, and the optimal distance is 0.5mm-5 mm. The pop can is made of metal materials, the best material is aluminum materials, and the pop can is integrally formed by using a traditional production process.

Referring to fig. 2-4, in use, the pop-top can is placed on a heating source, such as a wireless heating device 3, and a high-frequency magnetic field of the wireless heating charging device penetrates through the bottom of the can to generate circulation current, so as to realize heating. During the heating process, the pressure in the tank body rises, the self-protection heating area 1 is extruded to expand, and the groove part at the bottom of the tank begins to elongate. The distance between the bottom surface of the self-protection heating area 1 and the wireless heating equipment 3 is gradually reduced, and the magnetic field between the wireless heating equipment 3 and the tank bottom is weakened, so that the heating power is reduced. The tank body naturally dissipates heat, and the balance point between wireless heating and heat dissipation is reached to realize heating temperature control. The heating power of the can body shown in each figure is:

P＝P_n*S₁*τ₁+P_n*S₂*τ₂(formula one)

Wherein: p: actual heating power W, P of the tank_n: wireless heater power W, S₁: self-protection heating zone 1 area cm²，τ₁: heating efficiency% of the self-protected heating zone 1, S₂: other equivalent heating zone 2 area cm²And the other equivalent heating zones 2 heating efficiency%.

As shown in fig. 2, along with the heating of the tank body, the self-protection heating area 1 is deformed by the increase of the internal pressure, so that the distance h between the self-protection heating area 1 and the base of the wireless heater is smaller and smaller, the heating efficiency tau is increased, the actual heating power P is increased, and the tank body enters a rapid heating stage:

wherein: τ: heating efficiency, corresponding to equation one₁、τ₂K: heating efficiency coefficient%, S: heating area corresponding to formula I₁、S₂δ: jar body aluminum product thickness mm, h: the distance between the self-protection heating zone 1 and the heater base is mm, rho: the resistivity of the can material.

As shown in fig. 3, as the time is prolonged, the temperature in the tank is continuously increased, and the pressure p in the tank is also continuously increased, so that the deformation of the self-protection heating area 1 is increased, other equivalent heating areas 2 of the tank are separated from the induction range of wireless heating, and finally the heating surface of the tank is reduced, thereby achieving the self-protection effect of tank heating.

p＝k₁T (formula three)

F＝p*S₁(formula four)

∈＝k₂F (formula five)

Wherein: p: internal pressure Pa, F of the tank: the pressure inside the tank body is controlled,

S₁: the area of the heating zone 1 is self-protected,

k₁: in canThe coefficient of expansion of the substance is,

k₂: modulus of elasticity of the material of the self-protected heating zone 1.

Referring to fig. 4, if an overheating condition occurs during the heating process, the self-protection heating area 1 and the groove are completely deformed into an arc, and the tank body will automatically collapse and be separated from the wireless heating device 3.

As shown in fig. 5, in the heating process of the tank body, the heating power of the tank body is in a continuously increasing state along with the continuous decrease of the distance h between the self-protection heating area 1 and the wireless heating base, the heating power reaches the maximum when the protection area is in contact with the surface of the heating base, the distance h between the self-protection area and the surface of the heating base is increasingly larger along with the continuous increase of the heating temperature, the heating power is in a continuously decreasing state, and when the self-heat dissipation power and the heating power of the tank body are balanced, the purpose of keeping the constant temperature of the substances in the tank body can be achieved.

Claims

1. The utility model provides a take easy open can of self preservation protection heating function, includes jar body and tank bottoms, its characterized in that: the tank bottom is provided with a self-protection heating area which is a raised platform and forms a groove with the periphery of the tank bottom; the groove is an equivalent heating area; the bottom surface of the self-protection heating zone is a plane, and the bottom surface of the self-protection heating zone is not lower than the bottommost position around the bottom of the tank; the groove bottom is arc-shaped.

2. The pop can with self-protection heating function as claimed in claim 1, wherein: the vertical distance between the bottom surface of the self-protection heating zone and the bottommost position around the tank bottom is 0-5 mm.

3. The pop can with self-protection heating function as claimed in claim 1, wherein: the self-protection heating zone is arranged in the middle of the bottom of the tank, and the length of the bottom surface is 1/3-2/3 of the diameter of the tank body.

4. The can with self-protection heating function as claimed in claim 2, wherein: the vertical distance between the bottom surface of the self-protection heating zone and the bottommost position around the tank bottom is 0.5mm-5 mm.

5. The pop can with self-protection heating function as claimed in claim 1, wherein: the tank body and the tank bottom are made of aluminum or tinplate.