Graphene heat source unit production process and packaging structure thereof

Abstract

The invention belongs to the technical field of kitchen heating appliances, and particularly relates to a graphene heat source unit production process and a packaging structure thereof, which are used for producing independent graphene heat source body units capable of being freely assembled and matched. Comprising the following steps that S1, a glass fiber fabric at one end is unwound into a tubular furnace, a gas transmission device outputs Ar, H2 and CH4 to react to generate a graphene layer attached to the surface of the glass fiber fabric, and the other end is wound to form a roll material of a graphene heat source body; s2, the graphene heat source body is unreeled and enters a dispensing device; s3, the graphene heat source body continuously moves to enter a copper bar attaching device for copper electrode attaching; s4, the graphene heat source body continues to move into the glue scraping device for surface gluing; s5, the graphene heat source body is moved into a concentric-square-shaped oven to be heated, and then rolling is conducted; and S6, the graphene heat source body is cut, edge sealing is conducted on the cut graphene heat source body unit, and the independent combinable graphene heat source body unit can be obtained through the method.

Description

Technical Field

[0001] The invention belongs to the technical field of kitchen heating appliances, and in particular relates to a production process of a graphene heat source unit and a packaging structure thereof. Background Art

[0002] Graphene is a two-dimensional carbon nanomaterial composed of carbon atoms in a hexagonal honeycomb lattice with sp2 hybrid orbitals. It has excellent optical, electrical and mechanical properties, and has important application prospects in materials science, micro-nano processing, energy, biomedicine and drug delivery. Kitchen heating appliances usually use electromagnetic heating or electric heating tube heating to bake food. The former uses electromagnetic heating and its energy consumption is large, and the latter uses electric heating tube technology, so its energy consumption is still large. In addition, the contact area between the electric heating tube and the heating plate is relatively limited, which easily causes uneven heat conduction of the heat conduction surface of the heating plate, resulting in insufficient baking of food, thereby reducing the baking effect of food. In the prior art, by adding a graphene coating and utilizing the characteristics of graphene heating blocks and uniform heating, rapid heating of food is achieved, while the kitchen heating appliances produced by the methods in the prior art have technical problems such as uneven heating of the heating structure and insufficient response of temperature rise and fall. Summary of the invention

[0003] The purpose of the present invention is to provide a graphene heat source unit production process and its packaging structure, aiming to solve the technical problems of uneven heating and slow temperature rise and fall response of kitchen heating appliances in the prior art.

[0004] To achieve the above object, an embodiment of the present invention provides a graphene heat source unit production process, comprising the following steps:

[0005] S1: One end of the glass fiber fabric is unwound and enters the gas delivery device in the tubular furnace to output Ar, H2, and CH4 to react and generate a graphene layer attached to the surface of the glass fiber fabric. The glass fiber fabric is continuously transported to complete the continuous attachment of the graphene layer, and the other end is rolled up to form a roll of the graphene heat source body;

[0006] S2: The graphene heat source body is assembled onto an unwinding device, and the graphene heat source body is unwound into a glue dispensing device, and the glue dispensing device performs a multi-station glue dispensing process on the surface of the graphene heat source body;

[0007] S3: After the glue dispensing process is completed, the graphene heat source body continues to move into the copper strip pasting device, and the copper strip pasting device performs copper electrode pasting on the graphene heat source body;

[0008] S4: the graphene heat source body continues to move into the glue scraping device, and the glue scraping device applies glue to the surface of the graphene heat source body;

[0009] S5: the graphene heat source body continues to move to the return oven for heating, and the heated graphene heat source body is rolled up;

[0010] S6: cutting the graphene heat source body according to demand to form independent units with different powers, and sealing the edges of the cut graphene heat source body units with glue.

[0011] Preferably (fixed writing format), in the S1 step, an outer tube and an inner tube are provided in the tubular furnace, the glass fiber fabric is spirally wound on the outer wall of the inner tube, the gas outlet end of the gas transmission device is located in the inner tube, a plurality of through holes are opened on the side wall of the inner tube, and the inner tube is sleeved in the outer tube.

[0012] Preferably, in the step S1, the tube furnace is divided into a connected annealing section and a growth section, the annealing section is located on the feed side of the tube furnace, the growth section is located on the discharge side of the tube furnace, and the glass fiber fabric wrapped around the inner tube passes through the annealing section and the growth section in sequence.

[0013] Preferably, in the step S2, the graphene heat source body passes through a deviation correction device before entering the dispensing device to adjust its lateral position during the movement.

[0014] Preferably, in the step S2, the glue dispensing device is a multi-station glue dispensing machine to complete multi-point glue dispensing processing on the surface of the graphene heat source body.

[0015] Preferably, in the step S3, the copper strip multi-station processing end on the copper strip pasting device simultaneously completes the copper strip pasting and cutting at a plurality of corresponding glue points.

[0016] Preferably, in the step S4, the upper and lower cloths of the graphene heat source body are subjected to a scraping treatment.

[0017] Preferably, in the step S5, the graphene heat source body output from the rewinding oven is subjected to a deviation correction process again and then rolled up to ensure neat rolling.

[0018] Preferably, in the step S6, the processed roll of the graphene heat source body is separated and cut to form a plurality of independent graphene heat source bodies which are then sealed at the edges to facilitate free combination according to usage requirements.

[0019] The above one or more technical solutions in a graphene heat source unit production process and packaging structure provided by an embodiment of the present invention have at least one of the following technical effects:

[0020] A production process for a graphene heat source unit in the present invention pre-treats the surface of a glass fiber fabric to ensure that the surface of the glass fiber fabric is clean and suitable for the growth of graphene, installs the roll of the glass fiber fabric on a sample feed roller, unwinds the roll by driving the sample feed roller, and the glass fiber fabric enters a tubular furnace. A synchronous mixed gas of Ar, H2, and CH4 is input into the tubular furnace. The mixed gas of Ar, H2, and CH4 reacts to decompose CH4 under a high temperature environment, and CVD growth of graphene is performed directly on the surface of the glass fiber fabric. The glass fiber fabric with graphene attached is then moved and rolled up on a sample output roller, and the rolled-up graphene heat source body roll is placed on an unwinding device. The unwinding device outputs the graphene heat source body roll into a glue dispensing device. A plurality of glue dispensing stations are arranged on the glue dispensing device, and glue dispensing processing can be performed at any position on the roll surface of the graphene heat source body according to demand. After the glue dispensing processing is completed, the graphene The coil of the heat source body continues to be conveyed to the copper strip pasting device, and the copper strip pasting device corresponds to the glue dispensing station setting of the glue dispensing device to perform corresponding copper strip pasting, and then cuts to complete the copper strip pasting. The coil of the graphene heat source body with the copper strip pasted continues to enter the glue scraping device for glue scraping treatment on the upper and lower surfaces to improve the final heating efficiency, service life, and anti-oxidation and anti-corrosion properties of the graphene heat source body. After the glue coating is completed, the graphene heat source body enters the return molding oven for drying treatment, and then is reeled up to complete the processing operation. The processed coil of the graphene heat source body is separated and cut according to needs, and then the edges of each independent graphene heat source body after cutting are sealed with glue to protect the edges. At the same time, the sealing can also improve the overall strength. The independent units of the graphene heat source body produced by the above method can be freely combined and assembled according to the needs of users, effectively improving the processing efficiency of the heat source itself and reducing the overall thickness.

[0021] A packaging structure provided in another embodiment of the present invention is made of the above-mentioned independent units of the graphene heat source body, and also includes an external terminal and a substrate protective layer. The external terminal is electrically connected to several independent units of the graphene heat source body, and the external terminal is fixedly installed on the substrate protective layer, and the external terminal passes through the substrate protective layer, and the substrate protective layer wraps the independent units of the graphene heat source body.

[0022] The above one or more technical solutions of the packaging structure provided by the embodiment of the present invention have at least one of the following technical effects:

[0023] The packaging structure adopts the above-mentioned graphene heat source unit production process to produce one or more independent units of graphene heat source bodies, which are combined and electrically connected to external terminals. The external terminals penetrate the substrate protective layer, and the external terminals complete the connection with the external circuit through contact, thereby realizing the electrical connection between the graphene heat source body located inside the substrate protective layer and the external circuit, while ensuring the absolute isolation of the graphene heat source body from the external environment, effectively improving the safety performance of heating products using the packaging structure. Through the above-mentioned structural setting, the heat source using the packaging structure of the present application can ensure that the performance is far higher than that of products on the market while ensuring safety performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0025] Figure 1 A flow chart of a graphene heat source unit production process provided in an embodiment of the present invention.

[0026] Figure 2 A cross-sectional view of a packaging structure (basic style) provided in an embodiment of the present invention.

[0027] Among them, the reference numerals in the figure are:

[0028] 10—graphene heat source body 20—substrate protection layer 30—external terminal DETAILED DESCRIPTION

[0029] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings 1 to 2, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0030] In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the referred device or element 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.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0032] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0033] In one embodiment of the present invention, Figure 1 As shown, a graphene heat source unit production process is provided, comprising the following steps:

[0034] S1: The glass fiber fabric at one end is unwound and enters the tube furnace. The gas delivery device outputs Ar, H2, and CH4 to react and form a graphene layer attached to the surface of the glass fiber fabric. The glass fiber fabric is continuously transported to complete the continuous attachment of the graphene layer. Ar is used as an inert gas to help maintain the pressure and temperature stability of the reaction chamber; H2 is used to reduce and clean the surface of the metal substrate to promote the growth of graphene; CH4 is a carbon source, which provides carbon atoms required for graphene growth after decomposition and is deposited on the surface of the glass fiber fabric to form a graphene film. The other end is rolled up to form a coil of the graphene heat source body 10. The coil has different widths according to the needs;

[0035] S2: The graphene heat source body 10 is assembled onto the unwinding device, and the graphene heat source body 10 is unwound and enters the glue dispensing device. The glue dispensing device performs multi-station glue dispensing processing on the surface of the graphene heat source body 10 to improve the heat conduction efficiency after the copper strip is assembled. The glue dispensing station can be adjusted according to demand;

[0036] S3: After the glue dispensing process is completed, the graphene heat source body 10 continues to move into the copper strip pasting device, and the copper strip pasting device adheres the copper electrode to the graphene heat source body 10. The copper strip pasting device can adhere a preset fixed-length copper strip on each glue dispensing position;

[0037] S4: the graphene heat source body 10 continues to move into the glue scraping device, and the glue scraping device applies glue to the surface of the graphene heat source body 10 to enhance the thermal conductivity of the material and provide a protective barrier;

[0038] S5: the graphene heat source body 10 continues to move to the return oven for heating, and the heated graphene heat source body 10 is rolled up to complete the processing of the glass fiber fabric surface;

[0039] S6: Cut the graphene heat source body 10 according to the demand to form independent units with different powers, seal the edges of the cut graphene heat source body 10 units with glue, and cut and separate the coil according to the processing conditions of the coil surface and the demand for independent units to obtain graphene heat source body 10 units with fixed power.

[0040] A production process for a graphene heat source unit in the present invention pre-treats the surface of a glass fiber fabric to ensure that the surface of the glass fiber fabric is clean and suitable for the growth of graphene, installs the roll of the glass fiber fabric on a sample feed roller, unwinds the roll by driving the sample feed roller, and the glass fiber fabric enters a tubular furnace. A synchronous mixed gas of Ar, H2, and CH4 is input into the tubular furnace. The mixed gas of Ar, H2, and CH4 reacts to decompose CH4 under a high temperature environment, and CVD growth of graphene is performed directly on the surface of the glass fiber fabric. The glass fiber fabric with graphene attached is then moved and rolled up on a sample output roller, and the rolled-up graphene heat source body 10 roll is placed on an unwinding device. The unwinding device outputs the graphene heat source body 10 roll into a glue dispensing device. A plurality of glue dispensing stations are arranged on the glue dispensing device, and glue dispensing processing can be performed at any position on the roll surface of the graphene heat source body 10 according to needs. After the glue dispensing processing is completed, the graphene heat source body The coil of graphene heat source body 10 is continuously conveyed to the copper strip pasting device, and the copper strip pasting device is set to the glue dispensing station of the corresponding glue dispensing device to perform the corresponding copper strip pasting, and then the copper strip pasting is completed by cutting. The coil of graphene heat source body 10 after the copper strip is pasted continues to enter the glue scraping device for glue scraping treatment on the upper and lower surfaces, so as to improve the final heating efficiency, service life, anti-oxidation and anti-corrosion properties of graphene heat source body 10. After the glue coating is completed, the graphene heat source body 10 enters the return molding oven for drying treatment, and then is rolled up to complete the processing operation. The processed coil of graphene heat source body 10 is separated and cut according to needs, and then the edges of each independent graphene heat source body 10 after cutting are sealed with glue to protect the edges. At the same time, the sealing can also improve the overall strength. The independent units of graphene heat source body 10 produced by the above method can be freely combined and assembled according to the needs of users, effectively improving the processing efficiency of the heat source itself and reducing the overall thickness.

[0041] In another embodiment of the present invention, Figure 1As shown, in step S1, an outer tube and an inner tube are provided in the tubular furnace, the glass fiber fabric is spirally wound on the outer wall of the inner tube, the gas outlet end of the gas transmission device is located in the inner tube, a plurality of through holes are opened on the side wall of the inner tube, the inner tube is sleeved in the outer tube, and the glass fiber fabric spirally wound on the inner tube reacts with the Ar, H2, and CH4 mixed gas to form a graphene layer on the surface of the glass fiber fabric during the movement. The spirally wound movement mode prolongs the residence time of the glass fiber fabric in the tubular furnace and improves the quality of the graphene layer.

[0042] In another embodiment of the present invention, Figure 1 As shown, in step S1, the tube furnace is divided into a connected annealing section and a growth section, the annealing section is located on the feeding side of the tube furnace, and the growth section is located on the discharging side of the tube furnace. The glass fiber fabric wrapped on the inner tube passes through the annealing section and the growth section in turn, which can realize the precise control of the graphene growth process and improve the quality and performance of graphene; improve the flatness of the growth substrate, annealing can eliminate the problems of step aggregation on the surface of the growth substrate, improve the flatness of the substrate, and provide a more uniform and stable surface for the growth of graphene, which is conducive to the growth of high-quality graphene; optimize the growth conditions of graphene, and through annealing, the chemical state and surface energy of the growth substrate can be adjusted to make it more suitable for the growth of graphene. This helps to control the growth rate, number of layers and morphology of graphene, and realize the precise control of the graphene growth process; improve the performance of graphene, annealing can also improve the conductivity, heat resistance and corrosion resistance of graphene, so that it can still maintain stable performance in harsh environments such as high temperature and high pressure.

[0043] In another embodiment of the present invention, Figure 1 As shown, in step S2, the graphene heat source body 10 passes through a deviation correction device before entering the dispensing device to adjust the lateral position during the movement, thereby ensuring the accuracy of the points, improving the uniformity of the points on the entire surface, and ensuring the processing quality.

[0044] In another embodiment of the present invention, Figure 1 As shown, in step S2, the glue dispensing device is a multi-station glue dispensing machine, which completes multi-point glue dispensing processing on the surface of the graphene heat source body 10, and adjusts the glue dispensing stations according to needs to meet the glue dispensing processing requirements of different specifications.

[0045] In another embodiment of the present invention, Figure 1 As shown, in step S3, the copper bar multi-station processing end on the copper bar pasting device simultaneously completes the copper bar pasting and cutting of multiple corresponding glue points, and cooperates with the glue dispensing process to perform automatic pasting and cutting of the copper bar.

[0046] In another embodiment of the present invention, Figure 1As shown, in step S4, the upper and lower cloths of the graphene heat source body 10 are scraped with glue. By scraping the glue, a layer of adhesive can be formed on the surface of the graphene. This layer of adhesive can form a good chemical bond or physical adsorption with the graphene and other materials, thereby improving the adhesion strength between them, which is very important for ensuring the stability and reliability of the graphene heat source material in long-term use. The scraping glue treatment can form a protective film on the surface of the graphene, isolating or reducing the impact of these adverse factors on the graphene, thereby extending its service life.

[0047] In another embodiment of the present invention, Figure 1 As shown, in step S5, the graphene heat source body 10 output from the re-molding oven is subjected to a deflection correction process again and then rolled up to ensure neat rolling and maintain the flatness of both ends after rolling up.

[0048] In another embodiment of the present invention, Figure 1 As shown, in step S6, the coil of the processed graphene heat source body 10 is separated and cut to form a plurality of independent graphene heat source bodies 10 and then the edges are sealed to facilitate free combination according to usage requirements. The specific specifications of the cutting can be selected according to different requirements to obtain independent units of fixed specifications that meet different requirements. Then, according to specific product requirements, a single graphene body independent unit or a combination of multiple graphene heat source body 10 independent units is selected to meet the corresponding product requirements.

[0049] Another embodiment of the present invention provides a packaging structure, such as Figure 2As shown, it is made of the independent units of the above-mentioned graphene heat source body 10, and also includes an external terminal 30 and a substrate protective layer 20. The external terminal 30 is electrically connected to the independent units of several graphene heat source bodies 10. The external terminal 30 is fixedly installed on the substrate protective layer 20, and the external terminal 30 passes through the substrate protective layer 20. The substrate protective layer 20 wraps the independent units of several graphene heat source bodies 10. A heat conducting layer and a heat insulating layer are arranged between the graphene heat source body 10 and the substrate protective layer 20. The graphene heat source body 10 is located between the heat conducting layer and the heat insulating layer. The heat conducting layer improves the efficiency of heat transfer and can quickly transfer the heat of the graphene heat source body 10 to the upper substrate protective layer 20 area, ensuring that the heat is quickly dispersed and preventing local Overheating, reducing temperature fluctuations, and improving heating efficiency. The insulation layer effectively reduces the loss of heat transferred downward from the graphene heat source body 10, so that the heat can be concentrated in the graphene heat source body 10 and the upper substrate protection layer 20 area, thereby improving the overall energy utilization efficiency. As needed, a silicone layer can be set between the layers as needed, between the graphene heat source body 10 and the insulation layer, and between the graphene heat source body 10 and the heat conductive layer, to help evenly distribute heat and at the same time play a certain heat insulation role to prevent excessive heat loss and help concentrate heat in the heating area, thereby improving heating efficiency. The external terminal 30 is used to connect the graphene heat source body 10 and the external circuit, and the external terminal 30 cooperates with the substrate protection layer 20 and isolates the space inside the substrate protection layer 20 from the outside.

[0050] The packaging structure adopts the above-mentioned graphene heat source unit production process to produce one or more independent units of the graphene heat source body 10, which are combined and electrically connected to the external terminal 30. The external terminal 30 penetrates the substrate protection layer 20, and the external terminal 30 completes the connection with the external circuit through contact, thereby realizing the electrical connection between the graphene heat source body 10 located inside the substrate protection layer 20 and the external circuit, while ensuring the absolute isolation of the graphene heat source body 10 from the external environment, effectively improving the safety performance of the heating product using the packaging structure. Through the above-mentioned structural setting, the heat source using the packaging structure of the present application can ensure that the performance is far higher than that of the products on the market while ensuring the safety performance.

[0051] The rest of this embodiment is the same as the first embodiment. The features not explained in this embodiment are all based on the explanations in the first embodiment and will not be described in detail here.

[0052] 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 and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A graphene heat source unit production process, characterized in that: The following steps are involved: S1: One end of the glass fiber fabric is unwound and enters the gas delivery device in the tubular furnace to output Ar, H2, and CH4 to react and generate a graphene layer attached to the surface of the glass fiber fabric. The glass fiber fabric is continuously transported to complete the continuous attachment of the graphene layer, and the other end is rolled up to form a roll of the graphene heat source body; S2: The graphene heat source body is assembled onto an unwinding device, and the graphene heat source body is unwound into a glue dispensing device, and the glue dispensing device performs a multi-station glue dispensing process on the surface of the graphene heat source body; S3: After the glue dispensing process is completed, the graphene heat source body continues to move into the copper strip pasting device, and the copper strip pasting device performs copper electrode pasting on the graphene heat source body; S4: the graphene heat source body continues to move into the glue scraping device, and the glue scraping device applies glue to the surface of the graphene heat source body; S5: the graphene heat source body continues to move to the return oven for heating, and the heated graphene heat source body is rolled up; S6: cutting the graphene heat source body according to demand to form independent units with different powers, and sealing the edges of the cut graphene heat source body units with glue.

2. The production process of the graphene heat source unit according to claim 1, characterized in that: In the step S1, an outer tube and an inner tube are provided in the tube furnace, the glass fiber fabric is spirally wound on the outer wall of the inner tube, the gas outlet end of the gas transmission device is located in the inner tube, a plurality of through holes are opened on the side wall of the inner tube, and the inner tube is sleeved in the outer tube.

3. The production process of the graphene heat source unit according to claim 2, characterized in that: In the step S1, the tube furnace is divided into a connected annealing section and a growth section, the annealing section is located on the feeding side of the tube furnace, the growth section is located on the discharging side of the tube furnace, and the glass fiber fabric wound on the inner tube passes through the annealing section and the growth section in sequence.

4. The production process of the graphene heat source unit according to claim 3, characterized in that: In the step S2, the graphene heat source body passes through a deviation correction device before entering the dispensing device to adjust its lateral position during the movement.

5. The production process of the graphene heat source unit according to claim 1, characterized in that: In the step S2, the glue dispensing device is a multi-station glue dispensing machine, which completes multi-point glue dispensing processing on the surface of the graphene heat source body.

6. The production process of the graphene heat source unit according to claim 1, characterized in that: In the step S3, the copper strip multi-station processing end on the copper strip pasting device simultaneously completes the copper strip pasting and cutting at multiple corresponding glue points.

7. The production process of the graphene heat source unit according to claim 1, characterized in that: In the step S4, the upper and lower cloths of the graphene heat source body are subjected to a scraping treatment.

8. The production process of the graphene heat source unit according to claim 1, characterized in that: In the step S5, the graphene heat source body output from the rewinding oven is subjected to a deviation correction process again and then rolled up to ensure neat rolling.

9. The production process of the graphene heat source unit according to claim 1, characterized in that: In the step S6, the processed roll of the graphene heat source body is separated and cut to form a plurality of independent graphene heat source bodies, which are then sealed at the edges to facilitate free combination according to usage requirements.

10. A packaging structure, comprising an independent unit of the graphene heat source body cut and produced by the graphene heat source unit production process according to any one of claims 1 to 8, characterized in that: It also includes an external terminal and a substrate protective layer, wherein the external terminal is electrically connected to several independent units of the graphene heat source body, the external terminal is fixedly installed on the substrate protective layer, and the external terminal passes through the substrate protective layer, and the substrate protective layer wraps the independent units of the graphene heat source body.

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