Self-heating tank heating device, self-heating tank and heating method

Abstract

The invention provides a self-heating tank heating device, a self-heating tank and a heating method. The heating device comprises a hollow accommodating cavity, a switch pull rod and a pricking needle, and the hollow accommodating cavity is sequentially provided with a reactant solution, an interlayer and a quick lime solid from top to bottom; the switch pull rod is vertically inserted into the reactant solution in the hollow accommodating cavity; the lower end of the switch pull rod is connected with a pricking needle, and the pricking needle pierces the interlayer when moving downwards; the connecting height of the switch pull rod and the pricking needle is larger than the height of the hollow containing cavity. According to the self-heating tank heating device and the self-heating tank, food can be conveniently and rapidly heated, the breakage rate of the self-heating tank in the production and sales process is reduced, and meanwhile potential safety hazards of products are eliminated.

Description

Technical Field

[0001] The invention relates to a self-heating device, and in particular to a self-heating tank heating device, a self-heating tank and a heating method. Background Art

[0002] With the expansion of consumer consumption scenarios, self-heating food has gradually attracted people's attention. Self-heating food is simple and convenient to operate, does not rely on electricity, fire and other methods, and can quickly meet consumers' requirements for heating food. However, according to market survey information, self-heating cans currently have the following shortcomings: ① The self-heating switch device is not effectively protected and is susceptible to malicious damage, resulting in failure of the heating device. ② There is uneven heating during the heating process of the self-heating can, the temperature of the contents is uneven, the heating waiting time is too long, and the experience is poor. ③ During the production and sterilization process, the water bag in the heating device is prone to swell and burst, causing the heating to be turned on and lose its effectiveness. ④ During the production or transportation process, the bottom of the self-heating can swells, the heating device peels off, and the product is scrapped. ⑤ The safety hazards of the self-heating can are relatively high. If the operation is improper, it is easy to cause scalding to the operator or consumer. ⑥ The strength requirements for shaking up and down during the opening of the heating device are relatively high. Therefore, there is an urgent need for a new self-heating can heating device and self-heating can. Summary of the invention

[0003] In order to solve the above technical problems, the purpose of the present invention is to provide a self-heating can heating device, a self-heating can and a heating method, which can conveniently and quickly heat food, reduce the breakage rate of the self-heating can during the production and sales process, and eliminate the safety hazards of the product.

[0004] To achieve the above object, the present invention provides a self-heating tank heating device, which comprises a hollow accommodating cavity, a switch pull rod, and a pricking needle, wherein the hollow accommodating cavity is provided with a reactant solution, a barrier layer, and quicklime solid in sequence from top to bottom;

[0005] The switch pull rod is vertically inserted into the reactant solution in the hollow accommodating cavity;

[0006] The lower end of the switch pull rod is connected to a pricking needle, which pierces the partition when moving downward; the height of the switch pull rod and the pricking needle connected together is greater than the height of the hollow accommodating cavity.

[0007] According to a specific embodiment of the present invention, preferably, the hollow accommodating cavity is a cylinder.

[0008] According to a specific embodiment of the present invention, preferably, the hollow accommodating cavity is a plurality of accommodating cavities connected to each other, and there is an angle between any two adjacent accommodating cavities; preferably, the angle is 120 degrees.

[0009] The hollow accommodating cavity provided in the present invention can fully contact with the edible contents to heat the food evenly and stably, thereby increasing the heating rate.

[0010] According to a specific embodiment of the present invention, preferably, the reactant solution includes calcium chloride in a mass fraction range of 29.33%-45.80%, potassium carbonate in a mass fraction range of 43.97%-60.40% or sodium hydroxide in a mass fraction range of 23.08%-37.58%, and the balance is water.

[0011] According to a specific embodiment of the present invention, preferably, the reactant solution includes a combination of any two of calcium chloride with a mass fraction ranging from 29.33% to 35.68%, potassium carbonate with a mass fraction ranging from 43.97% to 50.86%, and sodium hydroxide with a mass fraction ranging from 23.08% to 26.21%, and the remainder is water.

[0012] According to a specific embodiment of the present invention, preferably, the boiling point of the solution in the reactant solution is 110°C-125°C.

[0013] According to a specific embodiment of the present invention, preferably, the boiling point of the solution in the reactant solution is 110°C-120°C.

[0014] According to a specific embodiment of the present invention, preferably, the weight ratio of the quicklime solid to the reactant solution is 1.2-4.8.

[0015] The reactant solution in the self-heating tank heating device of the present invention has a high boiling point. By reacting quicklime solid with the high-boiling-point reactant solution, the hidden danger of water vapor damaging the equipment is eliminated. Among them, the high-boiling-point reactant solution is an inorganic salt added to the aqueous solution, such as calcium chloride, potassium carbonate, and sodium hydroxide to make it reach the above-defined range. Within this range, the self-heating tank heating content can be fully reacted and heated, and at the same time, it is fully guaranteed that the high-boiling-point inorganic salt solution will not boil, which can effectively protect the self-heating tank heating device; it can also reduce the amount of inorganic salt used within the corresponding mass fraction range as needed to save resources, and at the same time, the safety hazard of the inorganic salt solution in the lower mass fraction range is smaller.

[0016] According to a specific embodiment of the present invention, preferably, the hollow accommodating cavity is made of PP material.

[0017] The present invention also provides a self-heating can, which comprises a can body, the above-mentioned heating device, and a pressing button of the heating device, wherein the hollow accommodating cavity is located at the top of the can body and extends downward to the middle and lower part of the can body;

[0018] The upper part of the switch pull rod extends from a hole arranged at the top of the tank body and is connected to a push button of the heating device;

[0019] Pressing the button of the heating device drives the needle connected to the lower part of the switch pull rod to move downward to pierce the partition, so that the reactant solution contacts the quicklime solid for heating reaction.

[0020] According to a specific embodiment of the present invention, preferably, the height of the hollow accommodating cavity is 0.5-0.8 of the height of the tank body, preferably 0.6-0.75, and further preferably 0.6-0.7.

[0021] According to a specific embodiment of the present invention, preferably, the volume of the hollow containing cavity is 0.07-0.3 of the volume of the tank body, preferably 0.1-0.2, and most preferably 0.1-0.16.

[0022] According to a specific embodiment of the present invention, preferably, a top cover is also provided on the top of the self-heating tank to protect the heating device to avoid malicious damage, protect the product and reduce the breakage rate.

[0023] According to a specific embodiment of the present invention, preferably, a tank body switch pull ring is also provided on the top of the self-heating tank.

[0024] The present invention also provides a method for heating food, which uses the above-mentioned heating device or self-heating pot to heat food.

[0025] Compared with the prior art, the self-heating can of the present invention optimizes the internal heating device more comprehensively. Because the switch of the heating device is provided with a protective cover, the product can be prevented from being maliciously damaged, thereby protecting the product and reducing the breakage rate. At the same time, the configuration of the heating device can expand the contact area with the contents and improve the heating efficiency. Further, by changing the heating reactants and using a reactant solution with a higher boiling point to react with quicklime solid, the generation of water vapor is reduced and the potential safety hazard of product expansion and cracking is eliminated. The present invention improves the safety of the product by changing the structure of the heating device to protect the self-heating device. The self-heating can of the present invention can heat food conveniently and quickly, reduce the breakage rate of the self-heating can during the production and sales process, and eliminate the potential safety hazard of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall structure of the self-heating tank provided in Example 1.

[0027] Figure 2 This is a front view of the overall structure of the self-heating tank provided in Example 1.

[0028] Figure 3 This is a schematic diagram of the overall structure of the self-heating tank provided in Example 2.

[0029] Description of Figure Numbers:

[0030] 1. Tank body; 2. Top cover; 3. Tank body switch pull ring; 4. Hollow containing cavity; 5. Reactant solution; 6. Switch pull rod; 7. Needle; 8. Interlayer; 9. Quicklime solid; 10. Heating device push button. DETAILED DESCRIPTION

[0031] The present invention is described in detail below in conjunction with specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0032] Unless specifically defined otherwise, all technical and scientific terms used herein have the same meanings as commonly understood by one of ordinary skill in the relevant art.

[0033] Example 1

[0034] This embodiment provides a self-heating tank heating device, a self-heating tank and a heating method, and its structure is as follows: Figure 1 , Figure 2 shown.

[0035] The heating device in this embodiment includes a hollow accommodating cavity 4, a switch pull rod 6, and a needle 7, wherein:

[0036] The hollow accommodating cavity 4 is provided with a reactant solution 5, a barrier layer 8, and quicklime solid 9 in sequence from top to bottom; the switch pull rod 6 is vertically inserted into the reactant solution in the hollow accommodating cavity 4; the lower end of the switch pull rod 6 is connected to a puncture needle 7, which punctures the barrier layer 8 when moving downward; the height of the switch pull rod 6 and the puncture needle 7 connected together is greater than the height of the hollow accommodating cavity 4, and the hollow accommodating cavity 4 is a cylinder made of PP material.

[0037] The reactant solution 5 is a calcium chloride solution with a mass fraction of 30% and the balance being water; the boiling point of the solution in the reactant solution 5 is 110°C.

[0038] The weight ratio of quicklime solid 9 to reactant solution 5 is 1.5.

[0039] The self-heating can in this embodiment comprises a can body 1, the above-mentioned heating device, a heating device push button 10, a top cover 2, and a can body switch pull ring 3, wherein:

[0040] The hollow accommodating cavity 4 is located at the top of the tank body 1 and extends downward to the middle and lower part of the tank body 1; the upper part of the switch pull rod 6 extends out from the hole set in the top of the tank body 1 and is connected to the heating device push button 10; pressing the heating device push button 10 drives the puncture needle 7 connected to the lower part of the switch pull rod 6 to move downward to puncture the interlayer 8, so that the reactant solution 5 contacts the quicklime solid 9 for heating reaction;

[0041] The height of the hollow accommodating cavity 4 is 0.67 of the height of the tank body 1; the height of the tank body 1 is 170 mm; the height of the hollow accommodating cavity 4 is 113.9 mm;

[0042] The volume of the hollow containing cavity 4 is 0.1 of the volume of the tank body 1; the volume of the tank body 1 is 500 mL. The volume of the hollow containing cavity 4 is 50 mL;

[0043] The self-heating pot of the present embodiment is used for heating. The heating device is turned on. After three minutes, the content is about 45° C., and after five minutes, the content is about 53° C.

[0044] Example 2

[0045] This embodiment provides a self-heating tank heating device, a self-heating tank and a heating method, and its structure is as follows: Figure 3 shown.

[0046] The heating device in this embodiment includes a hollow accommodating cavity 4, a switch pull rod 6, and a needle 7, wherein:

[0047] The hollow containing cavity 4 is provided with a reactant solution 5, a barrier layer 8, and quicklime solid 9 in sequence from top to bottom; the switch pull rod 6 is vertically inserted into the reactant solution in the hollow containing cavity 4; the lower end of the switch pull rod 6 is connected to a puncture needle 7, which punctures the barrier layer 8 when moving downward; the height of the switch pull rod 6 and the puncture needle 7 connected together is greater than the height of the hollow containing cavity 4; the hollow containing cavity 4 is composed of a plurality of containing cavities connected together, and the angle between the two adjacent containing cavities is 120 degrees; the material of the hollow containing cavity 4 is PP material.

[0048] The reactant solution 5 is a potassium carbonate solution with a mass fraction of 51% and the balance being water; the boiling point of the solution in the reactant solution 5 is 115°C.

[0049] The weight ratio of quicklime solid 9 to reactant solution 5 is 1.2.

[0050] The self-heating can in this embodiment comprises a can body 1, the above-mentioned heating device, a heating device push button 10, a top cover 2, and a can body switch pull ring 3, wherein:

[0051] The hollow accommodating cavity 4 is located at the top of the tank body 1 and extends downward to the middle and lower part of the tank body 1; the upper part of the switch pull rod 6 extends out from the hole set in the top of the tank body 1 and is connected to the heating device push button 10; pressing the heating device push button 10 drives the puncture needle 7 connected to the lower part of the switch pull rod 6 to move downward to puncture the interlayer 8, so that the reactant solution 5 contacts the quicklime solid 9 for heating reaction;

[0052] The height of the hollow accommodating cavity 4 is 0.7 of the height of the tank body 1; the height of the tank body 1 is 170 mm; the height of the hollow accommodating cavity 4 is 119 mm;

[0053] The volume of the hollow containing cavity 4 is 0.12 of the volume of the tank body 1; the volume of the tank body 1 is 500 mL. The volume of the hollow containing cavity 4 is 60 mL;

[0054] The self-heating pot of the present embodiment was used for heating. The heating device was turned on. After three minutes, the content was about 46° C., and after five minutes, the content was about 57° C.

[0055] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A self-heating can heating device, the heating device comprising a hollow accommodating cavity (4), a switch pull rod (6), and a pricking needle (7), wherein: The hollow containing cavity (4) is provided with a reactant solution (5), a barrier layer (8), and quicklime solid (9) in order from top to bottom; The switch pull rod (6) is vertically inserted into the reactant solution in the hollow accommodating cavity (4); The lower end of the switch pull rod (6) is connected to a pricking needle (7) which pierces the interlayer (8) when moving downward; the height of the switch pull rod (6) and the pricking needle (7) connected together is greater than the height of the hollow accommodating cavity (4).

2. The heating device according to claim 1, wherein: The hollow accommodating cavity (4) is a cylinder.

3. The heating device according to claim 1, wherein: The hollow accommodating cavity (4) is a plurality of accommodating cavities connected to each other, and an angle is formed between two adjacent accommodating cavities; Preferably, the angle is 120 degrees.

4. The heating device according to claim 1, wherein: The reactant solution (5) comprises calcium chloride in a mass fraction range of 29.33%-45.80%, potassium carbonate in a mass fraction range of 43.97%-60.40% or sodium hydroxide in a mass fraction range of 23.08%-37.58%, and the remainder is water.

5. The heating device according to claim 1, wherein: The reactant solution (5) comprises a combination of any two of calcium chloride with a mass fraction ranging from 29.33% to 35.68%, potassium carbonate with a mass fraction ranging from 43.97% to 50.86%, and sodium hydroxide with a mass fraction ranging from 23.08% to 26.21%, and the remainder is water.

6. The heating device according to claim 1, wherein: The boiling point of the solution in the reactant solution (5) is 110°C-125°C.

7. The heating device according to claim 1, wherein: The weight ratio of the quicklime solid (9) to the reactant solution (5) is 1.2-4.

8.

8. The heating device according to claim 1, wherein: The hollow accommodating cavity (4) is made of PP material.

9. A self-heating can, comprising a can body (1), a heating device according to any one of claims 1 to 8, and a pressing button (10) of the heating device, wherein: The hollow accommodating cavity (4) is located at the top of the tank body (1) and extends downward to the lower middle part of the tank body (1); The upper part of the switch pull rod (6) extends out from a hole provided at the top of the tank body (1) and is connected to a heating device push button (10); Pressing the heating device push button (10) drives the piercing needle (7) connected to the lower part of the switch pull rod (6) to move downward to pierce the barrier (8), so that the reactant solution (5) contacts the quicklime solid (9) for heating reaction; Preferably, the height of the hollow accommodating cavity (4) is 0.5-0.8 of the height of the tank body (1), preferably 0.6-0.75, and most preferably 0.67; Preferably, the volume of the hollow accommodating cavity (4) is 0.07-0.3 of the volume of the tank body (1), preferably 0.1-0.2, and most preferably 0.16; Preferably, the top of the self-heating tank is also provided with a top cover (2); Preferably, a tank body switch pull ring (3) is also provided on the top of the self-heating tank.

10. A method for heating food, which uses the heating device according to claims 1 to 8 or the self-heating pot according to claim 9 to heat food.

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