Outdoor heating appliance based on photothermal effect film material

Abstract

The invention relates to an outdoor heating appliance based on a photothermal effect film material, the outdoor heating appliance is of a three-dimensional structure formed by folding a plane structure, and the outdoor heating appliance is a containing cavity with a cavity opening; the outdoor heating appliance comprises a photothermal effect layer used for heating an object, a foaming heat insulation layer used for storing heat of the photothermal effect layer and a flexible shell used for supporting the whole plane folding structure. The outdoor heating appliance further comprises a fixing clamp, and the fixing clamp is used for fixing the outdoor heating appliance in a using state. Compared with the prior art, the photo-thermal effect film material is adopted, open fire or an external power source is not needed, solar energy can be efficiently converted into heat under the illumination condition, and the photo-thermal effect film solar energy collector has the advantages of being small in size, light in weight and convenient to carry.

Description

Technical Field

[0001] The invention relates to the technical field of photothermal effect film materials, and in particular to an outdoor heating device based on the photothermal effect film material. Background Art

[0002] When traveling or doing outdoor activities, heating food and drinks is a hassle, especially when the environmental conditions are harsh. Currently, the main outdoor heating appliances on the market include metal cookers and disposable heating packs, each of which has different advantages and limitations.

[0003] Metal cookware is mainly from outdoor tool brands such as Huofeng and Ailu Ke. They are heavy, not easy to fold, take up a lot of space, and require external energy such as fuel tanks or wood for heating. In addition, their use process is relatively complicated. If there is no stable heat source, the heating efficiency is relatively low in outdoor environments. This type of equipment is more suitable for relatively hardcore outdoor off-road and camping activities. The user group is often people who will engage in long-term outdoor activities and are willing to carry corresponding pots and stoves.

[0004] Disposable heating packs provide a flexible and convenient solution. Such heating packs are usually manufactured by food manufacturers. Their main ingredients include aluminum, iron powder or calcium oxide, and they use the principle of heat release from chemical reactions to heat. Since the heating packs themselves are not edible, they need to be used with pre-prepared foods in sealed packages such as soft cans. Compared with metal stoves, heating packs are more flexible and convenient to use, but the heat sustainability is poor and they are not reusable. The current heating packs can maintain the temperature for about 15 minutes, and other materials such as foam bags are needed to keep the food warm. The heating effect will be significantly reduced in low temperature or humid environments. In addition, the products generated by the reaction of the heating packs may have high alkalinity, and if they are broken or improperly handled, they may cause environmental pollution. This type of heating pack is generally suitable for short-term outdoor activities or emergency food, and is also one of the superior substitutes for foods such as instant noodles.

[0005] The current outdoor heating appliances have the following three main problems: first, they are heavy, inconvenient to carry and dangerous; second, they have low heating efficiency and are greatly affected by environmental humidity and temperature; third, they cannot get rid of the dependence on external energy supply. Therefore, it is urgent to develop an outdoor heating appliance that is small in size, lightweight, easy to carry, safe to use, has high heating efficiency and can get rid of the limitation of external energy. Summary of the invention

[0006] The purpose of the present invention is to overcome the defects of the above-mentioned prior art and provide an outdoor heating device based on photothermal effect film material to get rid of the limitation of external energy supply.

[0007] During the process of conception, the applicant believed that the present invention utilizes film-like photothermal effect materials to be processed into containers for outdoor cooking appliances, and adopts a flat folding structure to improve the use form of the photothermal effect film materials. Under lighting conditions, solar energy can be efficiently converted into heat, achieving directional heating that is independent of external energy and without the presence of open flames.

[0008] The purpose of the present invention can be achieved by the following technical solutions:

[0009] An outdoor heating device based on a photothermal effect film material, the outdoor heating device is a three-dimensional structure folded from a plane structure, and the outdoor heating device is a receiving cavity with a cavity opening;

[0010] The outdoor heating device comprises a photothermal effect layer for heating articles, a foaming insulation layer for preserving the heat of the photothermal effect layer, and a flexible shell for supporting the entire plane folding structure;

[0011] The outdoor heating appliance further comprises a fixing fixture, and the fixing fixture is used to fix the outdoor heating appliance in a use state.

[0012] Specifically, the planar structure of the outdoor heating device is composed of two symmetrical folding parts, the two folding parts are connected by a fold, the first folding part is composed of an isosceles triangle and two identical right-angled triangles to form a pentagon, the second folding part includes an isosceles triangle and a pentagon composed of two identical right-angled triangles, and a textured and stretchable quadrilateral, the height of the isosceles triangle of the second folding part is 1 / 3-3 / 5 of the first folding part, the three corners of the quadrilateral coincide with the three corners of the pentagon of the second folding part away from the fold, and extend and converge into a vertex, and the first side and the second side are a connected edge in the real object;

[0013] The three-dimensional structure of the outdoor heating device is a double quadrangular pyramid structure, which is composed of two quadrangular pyramids of different sizes. A triangular face of the large quadrangular pyramid serves as the cavity of the outdoor heating device, and a triangular face of the small quadrangular pyramid serves as the bottom of the outdoor heating device.

[0014] The present invention adopts a plane folding structure to improve the use form of the photothermal effect film material. The folding structure is derived from the evolution of the traditional tableware rotating body. The traditional cylindrical container is triangulated and the shape is adjusted according to the sunlight contact surface to obtain a double tetrahedral pyramid structure, which ensures the maximum light receiving area within a limited volume.

[0015] Furthermore, the triangular surface of the outdoor heating device is composed of a photothermal effect layer, a foam insulation layer, and a flexible shell from the inside to the outside, and the textured and stretchable quadrilateral surface is composed of only one layer of flexible shell;

[0016] When the outdoor heating device is in use, the surface with the texture is folded and the device is fixed using a fixing clamp.

[0017] Furthermore, a hard frame is provided inside the flexible shell to support the structure of the entire outdoor heating appliance.

[0018] Furthermore, the inner core of the flexible shell is ethylene-vinyl acetate copolymer material, and the outer skin is polyurethane material.

[0019] Furthermore, the foamed insulation layer is made of ethylene-vinyl acetate copolymer material, which is used to store the heat generated by the photothermal effect film and to heat food.

[0020] Furthermore, the photothermal effect layer adopts a photothermal effect film material for receiving sunlight and generating heat.

[0021] Further preferably, the photothermal effect membrane material is a MXene-bacterial cellulose nanofiber composite material or a multi-walled carbon nanotube-bacterial cellulose composite material;

[0022] Specifically, the preparation method of the photothermal effect film material is: using foamed bacterial cellulose as a matrix layer, mixing powdered multi-walled carbon nanotubes with the bacterial cellulose to form a film layer, wherein the matrix layer and the film layer are physically combined through the bacterial cellulose itself;

[0023] When in use, sunlight irradiates the upper film layer to generate heat, and the lower foam matrix layer isolates the heat from escaping outward, so that the generated heat can be conducted through the film layer to the object located above the film layer.

[0024] Specifically, the arrangement of the photothermal effect layer, the foamed insulation layer, and the flexible outer shell enables the outdoor heating device to have excellent thermal insulation properties while being easy for users to operate and hold.

[0025] Furthermore, the fixing fixture is made of aluminum alloy material.

[0026] Furthermore, the fixing fixture starts from a 3*3mm square base, and the folding process of the fixing fixture includes: forming two layers of isosceles right triangle structures that overlap but do not completely fit each other by bending along the diagonal of the square base, and opening a long strip along the axis of symmetry at the center of the upper triangle, and chamfering the bent edges.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] (1) The present invention is based on the heating principle of the photothermal effect and uses photothermal effect film materials to process outdoor cooking utensils. Under lighting conditions, the solar energy can be efficiently converted into heat and has good heating efficiency in some outdoor environments such as high altitude areas.

[0029] (2) The outdoor heating device provided by the present invention does not require open flames or external power supply during use, is not easy to burn, is safe and environmentally friendly, and can effectively avoid fire hazards and secondary hazards.

[0030] (3) The present invention adopts a flat folding structure to improve the use form of the photothermal effect film material, ensuring the maximum light receiving area within a limited volume, with high heating efficiency and little influence from ambient humidity and temperature. At the same time, the multi-layer material makes the outdoor heater have excellent thermal insulation performance; when not in use, it is unfolded into a flat structure with the characteristics of small size, light weight, and easy to carry, which increases the adaptability of application scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of an outdoor heating device based on a photothermal effect film material in use state according to the present invention;

[0032] Figure 2 This is a planar structural diagram of an outdoor heating device based on a photothermal effect film material according to the present invention;

[0033] Figure 3 This is a structural disassembly diagram of an outdoor heating device based on a photothermal effect film material of the present invention;

[0034] Figure 4 This is a schematic structural diagram of an outdoor heating device based on a photothermal effect film material in an unused state according to the present invention.

[0035] The names corresponding to the reference numerals in the accompanying drawings are: 1-crease; 2-first edge; 3-second edge; 4-flexible shell; 5-foam insulation layer; 6-photothermal effect layer; 7-fixing clamp. DETAILED DESCRIPTION

[0036] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. The following embodiments are implemented based on the above technical solution of the present invention, and provide detailed implementation methods and specific operation processes, but the protection scope of the present invention is not limited to the following embodiments.

[0037] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0038] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0039] Among them, the drawings are only used for illustrative purposes and represent only schematic diagrams rather than actual pictures, and should not be understood as limitations on this patent: in order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0040] In the following implementation modes or examples, unless otherwise specified, features such as structure / module name, control mode, algorithm, process or composition ratio are deemed to be common technical features disclosed in the prior art.

[0041] Example 1

[0042] See also Figure 1-4 , this embodiment provides an outdoor heating device based on a photothermal effect film material, the outdoor heating device is a three-dimensional structure folded from a plane structure, and the outdoor heating device is a receiving cavity with a cavity opening;

[0043] The outdoor heating device comprises a photothermal effect layer 6 for heating items, a foamed heat insulation layer 5 for preserving the heat of the photothermal effect layer 6, and a flexible shell 4 for supporting the entire planar folding structure;

[0044] The outdoor heating appliance further comprises a fixing fixture 7, and the fixing fixture 7 is used to fix the outdoor heating appliance in a use state.

[0045] In this embodiment, the planar structure of the outdoor heating device is composed of two symmetrical folding parts, the two folding parts are connected by a fold 1, the first folding part is composed of an isosceles triangle and two identical right-angled triangles to form a pentagon, the second folding part includes an isosceles triangle and a pentagon composed of two identical right-angled triangles, and a textured and stretchable quadrilateral, the height of the isosceles triangle of the second folding part is 4 / 7 of the first folding part, the three corners of the quadrilateral coincide with the three corners of the pentagon of the second folding part away from the fold 1, and extend and converge into a vertex, and the first side 2 and the second side 3 are a connected edge in the real object;

[0046] The three-dimensional structure of the outdoor heating device is a double quadrangular pyramid structure, which is composed of two quadrangular pyramids of different sizes. A triangular face of the large quadrangular pyramid serves as the cavity of the outdoor heating device, and a triangular face of the small quadrangular pyramid serves as the bottom of the outdoor heating device.

[0047] In this embodiment, the triangular surface of the outdoor heating device is composed of a photothermal effect layer 6, a foam insulation layer 5, and a flexible shell 4 from the inside to the outside, and the textured and stretchable quadrilateral surface is composed of only one layer of flexible shell 4; when the outdoor heating device is in use, the textured surface is folded and the device is fixed using a fixing clamp 7.

[0048] In this embodiment, a hard frame is provided inside the flexible shell 4 to support the structure of the entire outdoor heating appliance.

[0049] In this embodiment, the inner core of the flexible shell 4 is made of ethylene-vinyl acetate copolymer material, and the outer skin is made of polyurethane material.

[0050] In this embodiment, the foam insulation layer 5 is made of ethylene-vinyl acetate copolymer material, which is used to store the heat generated by the photothermal effect film and to heat food.

[0051] In this embodiment, the photothermal effect layer 6 is made of a photothermal effect film material, and the photothermal effect film material is a multi-walled carbon nanotube-bacterial cellulose composite material;

[0052] Specifically, the preparation method of the multi-walled carbon nanotube-bacterial cellulose composite material is as follows: using foamed bacterial cellulose as a matrix layer, mixing powdered multi-walled carbon nanotubes and bacterial cellulose to form a film layer, wherein the matrix layer and the film layer are physically combined through the bacterial cellulose itself;

[0053] When in use, sunlight irradiates the upper film layer to generate heat, and the lower foam matrix layer isolates the heat from escaping outward, so that the generated heat can be conducted through the film layer to the object located above the film layer;

[0054] The prepared multi-walled carbon nanotube-bacterial cellulose composite material has a unit area mass of 1.25g / cm 2 The carbon nanotube photothermal material has the highest heating efficiency under the same environment. Under one sun (wavelength 770-390nm, power about 900W / m 2 ), when there is no surface air flow, the maximum temperature reaches 70℃, which is about 50℃ higher than the initial temperature; the foamed matrix layer can effectively isolate heat and maintain the original temperature for about 4 minutes under the same environmental conditions after losing light.

[0055] In this embodiment, the fixing clamp 7 is made of aluminum alloy material. The fixing clamp 7 starts from a 3*3mm square base. The folding process of the fixing clamp 7 includes: bending along the diagonal of the square base to form two layers of isosceles right triangle structures that overlap but do not completely fit each other, and at the center of the upper triangle, a long strip opening is opened along its symmetry axis, and the bent edges are chamfered.

[0056] The use process of the outdoor heating device based on the photothermal effect film material in this embodiment is as follows:

[0057] (1) When an object needs to be heated, the planar structure is folded to obtain a triangular outdoor heating device, and then the surface with the texture is folded and fixed with a fixing fixture 7;

[0058] (2) placing the device under sunlight to receive solar energy, which is quickly converted into heat to heat the food or drink in the device;

[0059] (3) After use, remove the fixing fixture 7, restore the device to a flat structure, and store it after cleaning.

[0060] The core of this technology is the photothermal effect thin material. The rest of the invention can be replaced with other materials without destroying or blocking the heating film with photothermal effect. In addition, the plane folding structure adopted is not limited to the triangulated plane folding structure, and any structure that can achieve two folding states of use and placement can be adopted. This technology can be used not only for cooking utensils, but also has certain application prospects in clothing and other aspects.

[0061] The above description of the embodiments is to facilitate the understanding and use of the present invention by those skilled in the art. It is obvious that those skilled in the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the present invention is not limited to the above embodiments, and improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the present invention should be within the protection scope of the present invention.

Claims

1. An outdoor heating device based on photothermal effect film material, characterized in that: The outdoor heating device is a three-dimensional structure folded from a plane structure, and the outdoor heating device is a receiving cavity with a cavity opening; The outdoor heating device comprises a photothermal effect layer (6) for heating articles, a foamed heat insulation layer (5) for preserving the heat of the photothermal effect layer (6), and a flexible shell (4) for supporting the entire planar folding structure; The outdoor heating appliance further comprises a fixing fixture (7), wherein the fixing fixture (7) is used to fix the outdoor heating appliance in a use state.

2. The outdoor heating device based on the photothermal effect film material according to claim 1 is characterized in that: The planar structure of the outdoor heating device is composed of two symmetrical folding parts, the two folding parts are connected by a fold (1), the first folding part is composed of an isosceles triangle and two identical right-angled triangles to form a pentagon, the second folding part includes an isosceles triangle and a pentagon composed of two identical right-angled triangles, and a textured and stretchable quadrilateral, the height of the isosceles triangle of the second folding part is 1 / 3-3 / 5 of the height of the first folding part, the three corners of the quadrilateral coincide with the three corners of the pentagon of the second folding part away from the fold (1), and extend and converge to form a vertex, and the first side (2) and the second side (3) are a connected edge in reality; The three-dimensional structure of the outdoor heating device is a double quadrangular pyramid structure, which is composed of two quadrangular pyramids of different sizes. A triangular face of the large quadrangular pyramid serves as the cavity of the outdoor heating device, and a triangular face of the small quadrangular pyramid serves as the bottom of the outdoor heating device.

3. The outdoor heating device based on the photothermal effect film material according to claim 2 is characterized in that: The triangular surface of the outdoor heating device comprises, from the inside to the outside, a photothermal effect layer (6), a foamed heat insulation layer (5), and a flexible shell (4), and the textured and stretchable quadrilateral surface is composed of only one layer of the flexible shell (4); When the outdoor heating device is in use, the surface with the texture is folded and the device is fixed using a fixing clamp (7).

4. The outdoor heating device based on the photothermal effect film material according to claim 1, characterized in that: A hard frame is provided inside the flexible shell (4) for supporting the structure of the entire outdoor heating appliance.

5. The outdoor heating device based on the photothermal effect film material according to claim 1, characterized in that: The inner core of the flexible outer shell (4) is made of ethylene-vinyl acetate copolymer material, and the outer shell is made of polyurethane material.

6. The outdoor heating device based on the photothermal effect film material according to claim 1, characterized in that: The foamed heat insulation layer (5) is made of ethylene-vinyl acetate copolymer material.

7. The outdoor heating device based on the photothermal effect film material according to claim 1, characterized in that: The photothermal effect layer (6) is made of a photothermal effect film material.

8. The outdoor heating device based on the photothermal effect film material according to claim 7, characterized in that: The preparation method of the photothermal effect film material is as follows: using foamed bacterial cellulose as a matrix layer, mixing powdered multi-walled carbon nanotubes with the bacterial cellulose to form a film layer, wherein the matrix layer and the film layer are physically combined through the bacterial cellulose itself; When in use, sunlight irradiates the upper film layer to generate heat, and the lower foam matrix layer isolates the heat from escaping outward, so that the generated heat can be conducted through the film layer to the object located above the film layer.

9. The outdoor heating device based on the photothermal effect film material according to claim 3, characterized in that: The fixing fixture (7) is made of aluminum alloy material.

10. The outdoor heating device based on the photothermal effect film material according to claim 9, characterized in that: The fixing fixture (7) starts from a 3*3 mm square base, and the folding process of the fixing fixture (7) includes: forming two layers of isosceles right triangle structures that overlap each other but do not completely fit together by bending along the diagonal line of the square base, opening a long strip opening along its symmetry axis at the center of the upper triangle, and chamfering the edges after bending.

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