Demonstration device and method of heat conduction material

Abstract

The invention provides a heat conduction material demonstration device and method. The heat conduction material demonstration device comprises an elastic modulus demonstration device; the elastic modulus demonstration device comprises a first piece, a first demonstration unit and a second demonstration unit, the first demonstration unit comprises a first plane mirror; a second plane mirror; one side of the first placing plate is used for placing a first heat conduction material, and the other side is used for placing a first laser; the first laser is used for generating first laser, so that the first laser is reflected by the first plane mirror and the second plane mirror in sequence and then enters the first piece to be displayed; the second demonstration unit comprises a third plane mirror; a fourth plane mirror; one side of the second placing plate is used for placing a second heat conduction material piece, and the other side is used for placing a laser; and a second laser; the display position of the first laser on the first piece is used for representing the elastic modulus of the first heat conduction material; the display position of the second laser on the first piece represents the elastic modulus of the second heat conduction material piece. The performance of the heat conduction material can be visually displayed.

Description

Technical Field

[0001] The present application belongs to the technical field of electronic equipment, and more specifically, relates to a demonstration device and method for thermal conductive materials. Background Art

[0002] Thermally conductive materials are industrial materials used for efficient heat conduction. They are widely used in electronics, communications, automotive, aerospace, and other fields to solve equipment heat dissipation issues and improve product reliability and stability. Highly integrated products, in particular, generate significant heat during operation. In these cases, thermally conductive materials or components are needed to conduct heat away as quickly or evenly as possible, allowing internal power devices to operate normally at a relatively low temperature, significantly extending the device's lifespan and safety. Thermally conductive materials primarily refer to gap-filling surface contact materials and space-filling materials.

[0003] Thermal conductive materials include metal materials and polymer materials.

[0004] In order to understand the elastic modulus and thermal conductivity of thermal conductive materials, most related technologies use language description to compare thermal conductive materials, which cannot intuitively compare the advantages of various thermal conductive materials. Summary of the Invention

[0005] In order to improve or solve the technical problem in the related art that it is difficult to intuitively display the performance of thermal conductive materials, the purpose of this application is to provide a demonstration device and method for thermal conductive materials.

[0006] In a first aspect, an embodiment of the present application provides a demonstration device for a thermally conductive material, including an elastic modulus demonstration device; the elastic modulus demonstration device includes: a first piece, a first demonstration unit, and a second demonstration unit;

[0007] The first demonstration unit includes:

[0008] First plane mirror;

[0009] a second plane mirror, placed obliquely opposite to the first plane mirror;

[0010] a first placement plate, one side of which is used to place the first heat-conducting material piece, and the other side of which is used to place the first laser;

[0011] and a first laser for generating a first laser, so that the first laser is reflected by the first plane mirror and the second plane mirror in sequence and then incident on the first member for display;

[0012] The second demonstration unit includes:

[0013] third plane mirror;

[0014] a fourth plane mirror, placed obliquely opposite to the third plane mirror;

[0015] a second placement plate, one side of which is used to place the second heat-conducting material piece, and the other side of which is used to place the second laser;

[0016] and a second laser for generating a second laser, so that the second laser is reflected by the third plane mirror and the fourth plane mirror in sequence and then incident on the first member for display;

[0017] The demonstration device has a first state, in which the first laser and the second laser are displayed on the first piece;

[0018] The position where the first laser is displayed on the first piece is used to characterize the elastic modulus of the first heat-conducting material piece; the position where the second laser is displayed on the first piece is used to characterize the elastic modulus of the second heat-conducting material piece.

[0019] Furthermore, the first piece is provided with:

[0020] a first scale having a plurality of first scales provided along a pressing direction of the first heat-conducting material piece;

[0021] and a second scale having a plurality of second scales provided along the pressing direction of the second heat-conducting material piece.

[0022] Furthermore, a first weight-increasing block is provided on the first placement plate, and a second weight-increasing block is provided on the second placement plate.

[0023] Furthermore, the first laser and the second laser are both infrared lasers.

[0024] Furthermore, it also includes:

[0025] a first smoke machine, configured to generate first smoke to display a path of the first laser;

[0026] and a second smoke machine for generating a second smoke to illustrate a path of the second laser.

[0027] Furthermore, a heat conduction demonstration device is also included; the heat conduction demonstration device includes:

[0028] control unit;

[0029] a capacitive switch connected to the control unit;

[0030] a power supply connected to the control unit;

[0031] a first device and a second device;

[0032] The first device comprises:

[0033] a first heating device connected to the control unit, wherein a third heat-conducting material is placed on the first heating device;

[0034] a first metal member connected to the control unit, one side of which is coated with a thermosensitive pigment and is configured to contact the third thermally conductive material; a color change rate of the thermosensitive material being used to characterize the thermal conductivity of the third thermally conductive material;

[0035] a first cooling fin connected to the control unit, wherein the cold surface of the first cooling fin is adapted to contact the other surface of the metal component;

[0036] and a first radiator connected to the control unit and configured to dissipate heat from the hot surface of the first refrigeration fin;

[0037] The second device includes:

[0038] a second heating device connected to the control unit, wherein a third heat-conducting material is placed on the second heating device;

[0039] a second metal piece connected to the control unit, one side of which is coated with a thermosensitive pigment and is used to contact the fourth thermally conductive material; the color change rate of the thermosensitive material is used to represent the thermal conductivity of the fourth thermally conductive material;

[0040] a second cooling fin connected to the control unit, wherein the cold surface of the second cooling fin is adapted to contact the other surface of the metal component;

[0041] and a second radiator connected to the control unit for dissipating heat from the hot surface of the second refrigeration fin.

[0042] Furthermore, the first device further includes a first temperature sensor; the first temperature sensor is connected to the control unit, and the first temperature sensor is used to measure the temperature of the first metal part;

[0043] The second device further includes a second temperature sensor; the second temperature sensor is connected to the control unit, and the second temperature sensor is used to measure the temperature of the second metal part.

[0044] In a second aspect, an embodiment of the present application further provides a demonstration method of a demonstration device, comprising:

[0045] receiving a switch signal generated by triggering the capacitive switch;

[0046] controlling the first heating device to heat the third heat-conductive material according to the switching signal, so that the heat-sensitive pigment of the first metal member changes from a first color to a second color when heated;

[0047] controlling the second heating device to heat the fourth heat-conductive material according to the switching signal, so that the heat-sensitive pigment of the second metal member changes from the first color to the second color when heated;

[0048] Controlling the first cooling plate to cool the first metal member to reduce the temperature thereof, so that the heat-sensitive pigment of the first metal member changes from the second color to the first color when heated;

[0049] The second refrigeration plate is controlled to cool to lower the temperature of the second metal part, so that the heat-sensitive pigment of the second metal part changes from the second color to the first color when heated.

[0050] Furthermore, controlling the first refrigeration plate to cool to lower the temperature of the first metal part so that the heat-sensitive pigment of the first metal part changes from the second color to the first color when heated; comprising:

[0051] controlling the first radiator to dissipate heat from the hot surface of the first cooling fin to reduce the temperature of the hot surface of the first cooling fin;

[0052] Controlling the second refrigeration plate to cool the second metal piece to reduce the temperature of the second metal piece so that the heat-sensitive pigment of the second metal piece changes from the second color to the first color when heated; comprising:

[0053] The second radiator is controlled to dissipate heat to the hot surface of the second cooling fin to reduce the temperature of the hot surface of the second cooling fin.

[0054] Furthermore, controlling the first radiator to dissipate heat from the hot surface of the first cooling fin to reduce the temperature of the hot surface of the first cooling fin includes:

[0055] receiving a first temperature signal from a first temperature sensor;

[0056] determining whether the first temperature is greater than or equal to a predetermined value, and if so, controlling the first radiator to dissipate heat to the hot surface of the first cooling fin;

[0057] Controlling the second radiator to dissipate heat from the hot surface of the second refrigeration fin to reduce the temperature of the hot surface of the second refrigeration fin; comprising:

[0058] receiving a second temperature signal from a second temperature sensor;

[0059] It is determined whether the second temperature is greater than or equal to a predetermined value. If so, the second radiator is controlled to dissipate heat to the hot surface of the second cooling fin.

[0060] The thermal conductive material demonstration device and method of the embodiments of the present application can intuitively demonstrate the elastic modulus performance of the thermal conductive material through an elastic modulus demonstration device. The elastic modulus demonstration device can achieve intuitive demonstration of the performance of thermal conductive materials with different elastic moduli through the first member, the first demonstration unit, and the second demonstration unit. The thermal conductive material demonstration device, through the symmetrical design of the first demonstration unit and the second demonstration unit, utilizes the amplification effect of two plane mirror reflections on small deformations to convert the small deformations caused by the difference in elastic modulus of the two thermal conductive materials into a visually observable difference in the position of the laser spot on the first member, thereby achieving an intuitive presentation of the abstract elastic modulus parameter and efficiently comparing the performance difference between the two materials. The device has a simple structure, is easy to operate, and has high sensitivity. It is suitable for various scenarios such as teaching and exhibitions, and can quickly and clearly demonstrate the elastic modulus characteristics of the thermal conductive material to different groups.

[0061] This thermal conductivity demonstration device coordinates the operation of the capacitor switch, power supply, first device, and second device through a control unit. The first and second heating devices heat the third and fourth thermally conductive materials, respectively, transferring heat through the materials to the corresponding first and second metal parts. The heat-sensitive pigments coated on the first and second metal parts change color due to heat, and the rate of color change directly reflects the thermal conductivity of the materials. Simultaneously, a cooling plate and heat sink work together to maintain a stable temperature on the other side of the metal parts, ensuring a consistent thermal conductivity demonstration environment. The overall symmetrical structure enables simultaneous comparison of the thermal conductivity of the two materials, visualizing the abstract thermal conductivity rate through the visual changes in the thermal pigments. The control unit ensures convenient operation and precise demonstration, making it suitable for effectively demonstrating the performance differences of thermally conductive materials in various scenarios, such as teaching and demonstrations. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0063] Figure 1 Schematic diagram of the structure of the elastic modulus demonstration device.

[0064] Figure 2 This is a schematic diagram of the front view structure of the first piece.

[0065] Figure 3 Schematic diagram of the structure of the thermal conductivity demonstration device.

[0066] Figure 4 Schematic diagram of the principle structure of the heat conduction demonstration device.

[0067] Figure 5The present invention is a flowchart of a demonstration method for a demonstration device. DETAILED DESCRIPTION

[0068] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0069] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0070] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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 cannot be understood as a limitation on this application.

[0071] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0072] In this application, two objects placed diagonally opposite each other refer to a situation where the line connecting the centers of the two objects is neither a horizontal line nor a vertical line. For example, two plane mirrors placed diagonally opposite each other may refer to a situation where the line connecting the centers of the two plane mirrors forms an angle (which may be an acute angle) with the vertical line.

[0073] In order to improve or solve the technical problem in the related art that it is difficult to intuitively display the performance of thermal conductive materials, the purpose of this application is to provide a demonstration device and method for thermal conductive materials.

[0074] In the first aspect, the present invention provides a thermal conductive material demonstration device. Figure 1-Figure 4 As shown, it includes an elastic modulus demonstration device 2; the elastic modulus demonstration device 2 includes: a first piece 1, a first demonstration unit 20 and a second demonstration unit 21.

[0075] The first demonstration unit 20 includes: a first plane mirror 3, a second plane mirror 4, a first placement plate 6 and a first laser 5; the second plane mirror 4 and the first plane mirror 3 are placed diagonally opposite to each other; one side of the first placement plate 6 is used to place the first heat-conducting material piece, and the other side of the first placement plate is used to place the first laser 5; the first laser is used to generate a first laser 22, so that the first laser is reflected by the first plane mirror and the second plane mirror in sequence and then incident on the first piece for display.

[0076] The second demonstration unit 21 includes: a third plane mirror 8, a fourth plane mirror 9, a second placement plate 11, and a second laser 10; the fourth plane mirror 9 and the third plane mirror 8 are placed diagonally opposite each other; one side of the second placement plate 11 is used to place the second heat-conducting material, and the other side of the second placement plate is used to place the second laser; the second laser is used to generate a second laser 23, so that the second laser is reflected by the third plane mirror 8 and the fourth plane mirror 9 in sequence and then incident on the first member for display. The position where the first laser is displayed on the first member is used to represent the elastic modulus of the first heat-conducting material; the position where the second laser is displayed on the first member is used to represent the elastic modulus of the second heat-conducting material.

[0077] The first heat-conducting material piece and the second heat-conducting material piece are heat-conducting materials with elasticity. The first heat-conducting material piece and the second heat-conducting material piece may be two heat-conducting materials for comparison of elastic moduli.

[0078] See Figure 1-2 As shown, the elastic modulus demonstration device 2 includes a first component 1, a first demonstration unit 20, and a second demonstration unit 21. The first demonstration unit 20 includes: a first plane mirror 3, a second plane mirror 4, a first placement plate 6, and a first laser 5; the second plane mirror 4 and the first plane mirror 3 are placed diagonally opposite each other; that is, the first plane mirror 3 is placed on the upper left side of the second plane mirror 4, and the second plane mirror 4 is placed on the lower left side of the first plane mirror 3. The first heat-conducting material is placed below the first placement plate 6, and the first laser 5 is placed on the top of the first placement plate; the weight of the first laser will press down the first placement plate 6, and the first placement plate 6 will press down the first heat-conducting material, thereby lowering the height of the first heat-conducting material. The position of the first laser 22 generated by the first laser after being reflected by the first plane mirror 3 and the second plane mirror 4 and incident on the first component will be lowered.

[0079] Similarly, the second demonstration unit 21 includes: a third plane mirror 8, a fourth plane mirror 9, a second placement plate 11, and a second laser 10; the fourth plane mirror 9 and the third plane mirror 8 are placed diagonally opposite each other; that is, the third plane mirror 8 is placed on the upper right side of the fourth plane mirror 9, and the fourth plane mirror 9 is placed on the lower right side of the third plane mirror 8. The second heat conductive material is placed below the second placement plate 11, and the second laser is placed above the second placement plate.

[0080] Second placement plate 11 presses down on the second heat-conducting material, thereby lowering its height. Second laser light 23 generated by second laser 10, after being reflected by third and fourth mirrors 8 and 9, is incident on the first member, causing its position to be lowered. The position where the first laser light appears on the first member indicates the elastic modulus of the first heat-conducting material; the position where the second laser light appears on the first member indicates the elastic modulus of the second heat-conducting material.

[0081] The demonstration device has a first state, in which the first laser and the second laser are displayed on the first piece;

[0082] By comparing the positions of the first laser and the second laser at the first position, the elastic modulus of the first thermally conductive material and the second thermally conductive material can be compared. Optionally, the first thermally conductive material and the second thermally conductive material have the same specifications, such as shape, size, and thickness. Thus, under the same specifications, such as shape, size, and thickness, the elastic modulus of the two thermally conductive materials can be intuitively displayed.

[0083] The thermal conductive material demonstration device realizes intuitive, efficient and sensitive demonstration of the elastic modulus of thermal conductive materials through its unique structural design.

[0084] The elastic modulus is a mechanical property parameter that measures a material's ability to resist deformation. It's an abstract physical quantity that's difficult to observe directly. This device uses the principle of laser reflection to convert differences in the elastic modulus of thermally conductive materials into differences in the spatial position of the laser on a first object (such as a light screen or wall). Materials with different elastic moduli, when subjected to forces (such as thermal stress or external loads), experience tiny deformations that are transmitted to the laser through the placement plate, resulting in a slight change in the laser's emission angle. After two reflections from the plane mirror, this tiny angle change is amplified, ultimately forming a directly observable spot position difference on the first object. Thus, the abstract elastic modulus parameter is converted into an intuitive change in spatial position, making it easier to quickly understand and perceive.

[0085] The symmetrical design of the first and second demonstration units allows the device to simultaneously demonstrate the elastic modulus of the first and second thermally conductive material pieces. The relative positions of the two laser spots on the first piece directly reflect the difference in elastic modulus between the two materials (e.g., the material with a larger elastic modulus exhibits smaller deformation, resulting in a smaller positional offset of the corresponding laser spot). This "simultaneous demonstration, same-screen comparison" mode eliminates the need for separate measurements and subsequent data comparison, significantly improving comparison efficiency. It is particularly suitable for scenarios such as teaching and exhibitions where material performance differences need to be quickly demonstrated.

[0086] Material deformation caused by differences in elastic modulus is usually very small (micrometer or even nanometer scale), making direct observation extremely difficult. This device uses the reflective properties of light through a "double-plane mirror reflection" optical path design to amplify tiny deformations: the laser's tiny angular deflection θ caused by material deformation is deflected by 2θ after the first plane mirror reflection, and then after the second plane mirror reflection, the final spot position offset on the first piece is further amplified (the amplification factor is related to the plane mirror angle and the length of the reflection optical path). This amplification effect allows even tiny differences in elastic modulus to be converted into noticeable differences in spot position, significantly improving the sensitivity and recognizability of the demonstration.

[0087] Thus, the elastic modulus demonstration device can intuitively demonstrate the elastic modulus performance of thermal conductive materials; the elastic modulus demonstration device, through the first piece, the first demonstration unit, and the second demonstration unit, can achieve a visual demonstration of the performance of thermal conductive materials with different elastic moduli. This thermal conductive material demonstration device, through the symmetrical design of the first and second demonstration units, utilizes the amplification effect of two plane mirror reflections on tiny deformations to convert the tiny deformations caused by the difference in elastic modulus of the two thermal conductive materials into a visually observable difference in the position of the laser spot on the first piece, thereby achieving a visual presentation of the abstract elastic modulus parameter and enabling efficient comparison of the performance differences between the two materials. With its simple structure, easy operation, and high sensitivity, it is suitable for various scenarios such as teaching and exhibitions, and can quickly and clearly demonstrate the elastic modulus characteristics of thermal conductive materials to different groups.

[0088] For the convenience of intuitive display, a first scale 18 and a second scale 19 are provided on the first piece: the first scale is provided with multiple first scales along the pressing direction of the first heat-conducting material piece; the second scale is provided with multiple second scales along the pressing direction of the second heat-conducting material piece.

[0089] To make the positional changes of the first laser 22 and the second laser 23 on the first piece more obvious and to more intuitively reflect the elastic moduli of the two heat-conducting materials through the positions of the first laser 22 and the second laser 23 on the first piece, a first weight block 7 is provided on the first placement plate, and a second weight block 12 is provided on the second placement plate 11. The first weight block 7 and the second weight block 12 have the same weight.

[0090] By increasing the downward pressure of the first laser 5 and the second laser 10 by the first weight-increasing block 7 and the second weight-increasing block 12 respectively, the position change of the first laser and the second laser on the first piece can be made more obvious.

[0091] The placement of the first and second scales provides a clear, quantitative reference for the positional changes of the laser spot on the first component. The scale, along the direction of pressure applied to the first and second thermally conductive material components, intuitively reflects the varying degrees of deformation of materials with different elastic moduli under stress. This upgrades the original qualitative comparison into a quantifiable demonstration, allowing the observer to more accurately perceive the specific difference in elastic modulus between the two materials, enhancing the scientific nature and accuracy of the demonstration.

[0092] The addition of the first and second weight blocks provides a stable and controllable load for the material. By placing the weight blocks on the placement plate, different stress conditions can be simulated, ensuring that the pressure applied to the first and second thermally conductive material pieces remains consistent or at a set differential. This eliminates the interference of human uneven pressure on the demonstration results, enables a comparative demonstration under controlled variables, and makes the difference in the elastic modulus of the two materials more pure and convincing, further improving the reliability and applicability of the device in demonstrations under different stress scenarios.

[0093] Furthermore, the first laser and the second laser are both infrared lasers.

[0094] When both the first laser and the second laser are infrared lasers, the safety of the demonstration process is improved. Infrared lasers are invisible light and will not cause direct visual stimulation or damage to the human eye, especially in crowded scenes such as teaching and exhibitions. The light spot of an ordinary visible light laser is easily disturbed in a strong light environment (such as direct sunlight and strong lighting), resulting in unclear observation; while the light spot of an infrared laser can be clearly displayed through a dedicated infrared receiving screen (i.e., the first item), which is not affected by ambient light, ensuring that the difference in the elastic modulus of the thermal conductive material can be stably presented under various lighting conditions, thereby improving the environmental adaptability of the device.

[0095] The position of the infrared laser spot on the first and second scales can still be accurately located. Combined with the controllable load brought by the first and second weight blocks, the advantage of quantitative comparison can be continuously maintained. At the same time, with the help of the characteristics of infrared light, the demonstration can achieve a better balance between accuracy and safety.

[0096] Furthermore, it also includes a first smoke machine and a second smoke machine; the first smoke machine is used to generate a first smoke to display the path of the first laser; and the second smoke machine is used to generate a second smoke to display the path of the second laser.

[0097] The use of a smoke machine overcomes the visual limitation of infrared lasers, which are often invisible. Infrared lasers themselves cannot be directly observed by the naked eye. While the light spot can be seen through the receiving screen, the propagation path is "invisible," hindering understanding of the principles of laser reflection and deformation amplification. The smoke produced by the smoke machine, however, can reveal the laser path through light scattering, allowing the complete optical path of the first laser reflected by the first and second plane mirrors, and the second laser reflected by the third and fourth plane mirrors, to be clearly visible. This facilitates intuitive understanding of the optical principle of "double reflection amplifying small deformations," extending the demonstration from "result presentation" to "process demonstration," and deepening understanding of the device's working mechanism. The first and second smoke machines are not shown in the figure, but those skilled in the art can understand their placement and usage based on the above description.

[0098] On the other hand, the contrasting demonstration enhances the layering. The first and second smoke machines correspond to the first and second laser paths, respectively, forming two independent, visible light paths within the smoke. Combined with the light spot position and scale on the first component, the observer can simultaneously see the correlation between "light path change" and "light spot offset." When the thermally conductive material deforms due to differences in elastic modulus, not only does the light spot position differ on the scale, but the corresponding angular deflection of the laser light path within the smoke is also visible. This dual visual signal of "path change + position offset" further enhances the contrast and enhances the liveliness and persuasiveness of the demonstration.

[0099] See Figure 3 As shown, the demonstration device also includes a heat conduction demonstration device; the heat conduction demonstration device includes: a control unit, a capacitor switch 15, a power supply 31, a first device and a second device; the capacitor switch 15 is connected to the control unit; the power supply is connected to the control unit. Optionally, the control unit includes a processor 30, or a device including a processor, such as a single chip microcomputer. Figure 3 As shown, optionally, there can be multiple capacitive switches 15. By pressing any one of the multiple capacitive switches, all the capacitive switches 15 can be triggered simultaneously to ensure synchronous heating.

[0100] The first device includes: a first heating device 36, a first metal part 13, a first cooling fin 38 and a first radiator; optionally, the first metal part is a first aluminum sheet 37, and the surface of the first aluminum sheet 37 is coated with heat-sensitive paint; the first heating device is connected to the control unit, and the first heating device is used to place the third heat-conducting material 16; the first metal part is connected to the control unit, one side of the first metal part 13 is coated with heat-sensitive pigment, and the first metal part is used to contact the third heat-conducting material 16; the color change rate of the heat-sensitive material is used to characterize the thermal conductivity of the third heat-conducting material 16; the first cooling fin is connected to the control unit, and the cold surface of the first cooling fin 38 is used to fit the other side of the metal part; the first radiator 39 is connected to the control unit, and is used to dissipate heat from the hot surface of the first cooling fin.

[0101] The second device includes: a second heating device, a second metal part 14, a second cooling fin 41 and a second radiator; optionally, the second metal part 14 is a second aluminum sheet 34, and the surface of the second aluminum sheet 34 is coated with heat-sensitive paint; the second heating device 35 is connected to the control unit, and the second heating device 35 is used to place a third heat-conducting material; the second metal part is connected to the control unit, one side of the second metal part is coated with heat-sensitive pigment, and the second metal part is used to contact the fourth heat-conducting material 17; the color change rate of the heat-sensitive material is used to characterize the thermal conductivity of the fourth heat-conducting material; the second cooling fin 41 is connected to the control unit, and the cold surface of the second cooling fin is used to fit the other side of the metal part; the second radiator 40 is connected to the control unit, and the second radiator is used to dissipate heat from the hot surface of the second cooling fin.

[0102] The thermal conductivity demonstration device coordinates the coordinated operation of the capacitor switch, power supply, and the first device and the second device through a control unit, thereby achieving an efficient, intuitive and accurate comparative demonstration of the thermal conductivity rate of the thermal conductive material.

[0103] The third and fourth thermally conductive materials can be two thermally conductive materials whose thermal conductivity is to be compared. The thermal conductivity demonstration device can determine the thermal conductivity of the third and fourth thermally conductive materials by the rate of color change of the heat-sensitive paint on the first and second aluminum sheets. Optionally, the third and fourth thermally conductive materials have the same specifications, such as shape, size, and thickness.

[0104] As a core component, the control unit precisely regulates the heating power and duration of the first and second heating devices, ensuring consistent initial heating conditions for the third and fourth thermally conductive materials. The heat-sensitive pigment coated on the first and second metal parts converts the heat transferred during the material's conduction process into a directly observable color change, with the color change rate intuitively reflecting the thermal conductivity of the corresponding thermally conductive material. Specifically, the better the thermal conductivity of the material, the faster the heat transfer to the metal part, and the faster the color change of the heat-sensitive pigment, achieving a visual representation of the abstract thermal conductivity rate.

[0105] At the same time, the combination of the first cooling plate, the second cooling plate and the radiator plays a key role. The cold surface of the cooling plate is attached to the other side of the metal part, which can quickly take away the excess heat not transferred by the thermal conductive material, maintain the initial temperature of the side of the metal part in contact with the material stable, and avoid interference from ambient temperature or residual heat; the radiator efficiently dissipates the heat generated by the hot surface of the cooling plate, ensuring the continuous and stable operation of the cooling plate, further eliminating the influence of external factors on the demonstration results, and significantly improving the accuracy of the comparison.

[0106] Furthermore, the first device further includes a first temperature sensor 32; the first temperature sensor is connected to the control unit, and the first temperature sensor is used to measure the temperature of the first metal part;

[0107] The second device further includes a second temperature sensor 33 ; the second temperature sensor is connected to the control unit, and the second temperature sensor is used to measure the temperature of the second metal part.

[0108] The addition of the first temperature sensor and the second temperature sensor further improves the performance and demonstration quality of the thermal conductivity demonstration device.

[0109] First, accurate quantitative monitoring of the temperature of metal parts is achieved. While the color change of thermosensitive pigments can intuitively reflect temperature trends, it is difficult to provide precise temperature values. However, when the first and second temperature sensors are connected to the control unit, they can measure the specific temperatures of the first and second metal parts in real time and feed this data back to the control unit. This upgrades the characterization of thermal conductivity from "qualitative color change speed" to "quantitative temperature change data." This provides a more accurate and objective basis for comparing the performance of two thermally conductive materials, enhancing the scientific and rigorous nature of the demonstration.

[0110] Secondly, it provides data support for the precise control of the control unit. The control unit can dynamically adjust the heating power of the first and second heating devices, as well as the cooling intensity of the first and second cooling plates, based on the real-time temperature feedback from the temperature sensor. This ensures that the two materials are compared under the same temperature conditions, avoiding interference with the demonstration results caused by initial temperature differences or uneven heating / cooling, further ensuring the fairness and accuracy of the comparison.

[0111] Furthermore, it enriches the demonstration content and teaching value. During the demonstration, not only can the color change of the thermosensitive pigment be used to visually observe the difference in thermal conductivity rate, but the specific temperature value displayed by the temperature sensor can also help the observer gain a deeper understanding of the temperature variation during the thermal conduction process. Combining the visual color change with the specific temperature data can deepen the understanding of the principles of thermal conduction, which is particularly suitable for in-depth explanation of thermal conduction knowledge in teaching scenarios.

[0112] Finally, the reliability and stability of the device have been improved. Temperature sensors can monitor the temperature changes of metal parts in real time. If a temperature anomaly occurs (such as overheating or cooling failure), the control unit can make timely adjustments based on sensor feedback, avoiding the impact of temperature runaway on the demonstration effect and ensuring the stability of the device's operation.

[0113] In a second aspect, the present invention also provides a demonstration method for a demonstration device, see Figure 5 Shown, including:

[0114] S1. Receive a switching signal generated by triggering the capacitive switch;

[0115] S2. Controlling the first heating device to heat the third thermally conductive material according to the switching signal so that the heat-sensitive pigment of the first metal member changes from the first color to the second color when heated;

[0116] S3. Controlling the second heating device to heat the fourth thermally conductive material according to the switching signal so that the heat-sensitive pigment of the second metal member changes from the first color to the second color when heated;

[0117] S4. Controlling the first refrigeration sheet to cool the first metal member so that the heat-sensitive pigment of the first metal member changes from the second color to the first color when heated;

[0118] S5. Control the second cooling plate to cool the second metal member to reduce the temperature of the second metal member, so that the heat-sensitive pigment of the second metal member changes from the second color to the first color due to the heat.

[0119] The demonstration method of the demonstration device realizes efficient and intuitive demonstration of the thermal conductivity of thermal conductive materials through clear and orderly step design.

[0120] First, by synchronously triggering the first and second heating devices (steps S2 and S3), the third and fourth thermally conductive materials are heated at the same starting time, providing a fair initial condition for comparing the thermal conductivity rates of the two materials. The change of the heat-sensitive pigment from the first color to the second color transforms the material's thermal conductivity into a visual color dynamic, allowing the observer to directly perceive the difference in thermal conductivity between the two materials by directly observing the order and speed of the color change, which is highly intuitive.

[0121] Secondly, the cooling step after heating (steps S4 and S5) forms a complete cycle of "heating-color change-cooling-recovery." This cycle not only allows for repeated demonstrations (avoiding changes in the material or metal component's state after a single demonstration, affecting subsequent use), but also further verifies the heat dissipation-related properties of thermally conductive materials by allowing the heat-sensitive pigment to change from the second color back to the first color. Materials with good thermal conductivity can also dissipate heat more quickly during the cooling phase, allowing the pigment to restore color more quickly, enriching the demonstration dimension.

[0122] Furthermore, the entire process is uniformly controlled by the trigger signal from the capacitive switch, ensuring a highly interconnected process and avoiding time lags or parameter inconsistencies caused by human intervention. This ensures standardized demonstrations and repeatable results. Whether used in multiple demonstrations during teaching or continuously displayed at exhibitions, the performance differences between the two thermally conductive materials can be consistently demonstrated, enhancing the reliability of the demonstration.

[0123] In addition, this method transforms the complex principle of heat conduction into a simple "color change" cycle with clear operation logic, which is suitable for various audiences and effectively enhances the communication effect of the demonstration.

[0124] Further, S4. Controlling the first refrigeration plate to cool the first metal member to reduce the temperature of the first metal member so that the heat-sensitive pigment of the first metal member changes from the second color to the first color when heated; comprising:

[0125] S41. Controlling the first radiator to dissipate heat from the hot surface of the first cooling fin to reduce the temperature of the hot surface of the first cooling fin;

[0126] S5. Controlling the second refrigeration plate to cool the second metal member so that the heat-sensitive pigment of the second metal member changes from the second color to the first color when heated; comprising:

[0127] S51. Control the second radiator to dissipate heat to the hot surface of the second cooling fin to reduce the temperature of the hot surface of the second cooling fin.

[0128] When the refrigeration plate is operating, the hot surface generates a large amount of heat. If this heat cannot be dissipated in time, it will seriously affect the cooling effect of the cold surface. Steps S41 and S51 clearly control the first and second radiators to dissipate heat from the hot surface of the refrigeration plate, which can quickly reduce the temperature of the hot surface of the refrigeration plate, ensuring that the refrigeration plate is always in a highly efficient cooling state, and causing the temperature of the first and second metal parts to drop rapidly. This directly speeds up the recovery of the thermosensitive pigment from the second color to the first color, avoids slow or incomplete color recovery due to insufficient cooling, ensures the smoothness of the "heating-color change-cooling-recovery" cycle, and makes the demonstration process more efficient.

[0129] Improved accuracy in comparison demonstrations. The first and second heat sinks correspond to the cooling stages of the third and fourth thermally conductive materials, respectively. Synchronous and effective heat dissipation ensures that both materials face identical cooling conditions during the cooling phase, eliminating any interference with color recovery speed due to heat dissipation differences. The speed at which the heat-sensitive pigment recovers its color more purely reflects the heat dissipation-related properties of the thermally conductive material (positively correlated with thermal conductivity), ensuring a clear comparison of the performance differences between the two materials throughout the entire cycle and enhancing the credibility of the demonstration results.

[0130] Further, S41. Controlling the first radiator to dissipate heat from the hot surface of the first cooling fin to reduce the temperature of the hot surface of the first cooling fin; comprising:

[0131] S411. Receive a first temperature signal from a first temperature sensor;

[0132] S412. Determine whether the first temperature is greater than or equal to a predetermined value, and if so, control the first radiator to dissipate heat from the hot surface of the first cooling fin;

[0133] S51. Controlling the second radiator to dissipate heat from the hot surface of the second refrigeration fin to reduce the temperature of the hot surface of the second refrigeration fin; comprising:

[0134] S511. Receive a second temperature signal from a second temperature sensor;

[0135] S512: Determine whether the second temperature is greater than or equal to a predetermined value; if so, control the second radiator to dissipate heat to the hot surface of the second cooling fin.

[0136] Steps S411, S412, S511, and S512 significantly improve the intelligence and accuracy of the demonstration method by introducing the feedback and judgment mechanism of the temperature sensor.

[0137] First, it enables on-demand activation of the radiator, improving the device's energy efficiency and intelligence. The first and second temperature sensors collect the metal part's temperature in real time, convert it into an electrical signal, and feed it back to the control unit. The control unit triggers the corresponding radiator only when the temperature reaches a predetermined value. This "temperature-triggered" control mode avoids energy waste caused by the continuous operation of the radiator, precisely matching the heat dissipation action with actual cooling needs, making the device more efficient and intelligent. The energy-saving effect is particularly evident in long-term continuous demonstration scenarios.

[0138] Secondly, the stability and consistency of the cooling process are further guaranteed. Different thermally conductive materials transfer different amounts of heat during the heating phase, which may cause different temperature increases for the first metal part and the second metal part. If the radiators are started uniformly, excessive or insufficient heat dissipation may occur. Through the temperature determination step, the radiators can be independently controlled according to the actual temperature status of the two materials: when the third thermally conductive material has a stronger thermal conductivity, causing the temperature of the first metal part to be higher, the first radiator will start in time to enhance heat dissipation; conversely, if the fourth thermally conductive material has a weaker thermal conductivity, the second radiator will start after the temperature reaches the standard. This differentiated regulation ensures that the two cooling plates are always in the best working condition, makes the temperature drop process of the metal parts more stable, and the rhythm of the heat-sensitive pigment restoring color is more in line with the thermal conductivity characteristics of the material itself, further improving the accuracy of the comparative demonstration.

[0139] Furthermore, the controllability and reliability of the demonstration process are enhanced. The preset temperature value can be flexibly set according to the demonstration requirements. Standardized judgment criteria avoid subjective errors in human judgment of the radiator's activation timing, ensuring consistent radiator operating logic throughout each demonstration and consistent results across repeated demonstrations. Furthermore, real-time monitoring and feedback from the temperature sensor provide data support for the demonstration process. If abnormal temperature fluctuations occur, the control unit can make timely adjustments through a judgment mechanism, preventing improper heat dissipation from impacting the demonstration and significantly improving the reliability of the device's operation.

[0140] Furthermore, this mechanism allows the "heating-cooling" cycle to more closely align with the dynamic process of material heat conduction. Due to the different thermal conductivity rates of the two materials, the time it takes for the metal parts to reach the desired temperature varies. The step-by-step determination and activation method accurately adapts to this difference, making the entire demonstration more consistent with the actual physical process, enhancing the scientific nature of the demonstration. It also allows observers to more clearly understand the relationship between temperature changes and heat dissipation, deepening their understanding of the principles of thermal conductivity.

[0141] The functions and effects of the technical features in this technical solution that are similar or related to the aforementioned technical solution are similar to those of the aforementioned technical solution. The inventive concept and beneficial effects of this technical solution are similar to those of the aforementioned technical solution, and are not elaborated here.

[0142] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A demonstration device for thermal conductive materials, characterized in that: Includes elastic modulus demonstration device; The elastic modulus demonstration device comprises: a first piece, a first demonstration unit and a second demonstration unit; The first demonstration unit includes: First plane mirror; a second plane mirror, placed obliquely opposite to the first plane mirror; a first placement plate, one side of which is used to place the first heat-conducting material piece, and the other side of which is used to place the first laser; and a first laser for generating a first laser, so that the first laser is reflected by the first plane mirror and the second plane mirror in sequence and then incident on the first member for display; The second demonstration unit includes: third plane mirror; a fourth plane mirror, placed obliquely opposite to the third plane mirror; a second placement plate, one side of which is used to place the second heat-conducting material piece, and the other side of which is used to place the second laser; and a second laser for generating a second laser, so that the second laser is reflected by the third plane mirror and the fourth plane mirror in sequence and then incident on the first member for display; The demonstration device has a first state, in which the first laser and the second laser are displayed on the first piece; The position where the first laser is displayed on the first piece is used to characterize the elastic modulus of the first heat-conducting material piece; the position where the second laser is displayed on the first piece is used to characterize the elastic modulus of the second heat-conducting material piece.

2. The material demonstration device according to claim 1, characterized in that: The first piece is provided with: a first scale having a plurality of first scales provided along a pressing direction of the first heat-conducting material piece; and a second scale having a plurality of second scales provided along the pressing direction of the second heat-conducting material piece.

3. The material demonstration device according to claim 1, characterized in that: A first weight-increasing block is provided on the first placement plate, and a second weight-increasing block is provided on the second placement plate.

4. The material demonstration device according to claim 1, characterized in that: The first laser and the second laser are both infrared lasers.

5. The material demonstration device according to claim 1, characterized in that: Also includes: a first smoke machine, configured to generate first smoke to display a path of the first laser; and a second smoke machine for generating a second smoke to illustrate a path of the second laser.

6. The material demonstration device according to any one of claims 1 to 5, characterized in that: Also included is a heat conduction demonstration device; the heat conduction demonstration device includes: control unit; a capacitive switch connected to the control unit; a power supply connected to the control unit; a first device and a second device; The first device comprises: a first heating device connected to the control unit, wherein a third heat-conducting material is placed on the first heating device; a first metal member connected to the control unit, one side of which is coated with a thermosensitive pigment and is configured to contact the third thermally conductive material; a color change rate of the thermosensitive material being used to characterize the thermal conductivity of the third thermally conductive material; a first cooling fin connected to the control unit, wherein the cold surface of the first cooling fin is adapted to contact the other surface of the metal component; and a first radiator connected to the control unit and configured to dissipate heat from the hot surface of the first refrigeration fin; The second device includes: a second heating device connected to the control unit, wherein a third heat-conducting material is placed on the second heating device; a second metal piece connected to the control unit, one side of which is coated with a thermosensitive pigment and is used to contact the fourth thermally conductive material; the color change rate of the thermosensitive material is used to represent the thermal conductivity of the fourth thermally conductive material; a second cooling fin connected to the control unit, wherein the cold surface of the second cooling fin is adapted to contact the other surface of the metal component; and a second radiator connected to the control unit for dissipating heat from the hot surface of the second refrigeration fin.

7. The material demonstration device according to claim 6, characterized in that: The first device further includes a first temperature sensor; the first temperature sensor is connected to the control unit, and the first temperature sensor is used to measure the temperature of the first metal part; The second device further includes a second temperature sensor; the second temperature sensor is connected to the control unit, and the second temperature sensor is used to measure the temperature of the second metal part.

8. A demonstration method for the demonstration device according to claim 6, characterized in that: include: receiving a switch signal generated by triggering the capacitive switch; controlling the first heating device to heat the third heat-conductive material according to the switching signal, so that the heat-sensitive pigment of the first metal member changes from a first color to a second color when heated; controlling the second heating device to heat the fourth heat-conductive material according to the switching signal, so that the heat-sensitive pigment of the second metal member changes from the first color to the second color when heated; Controlling the first cooling plate to cool the first metal member to reduce the temperature thereof, so that the heat-sensitive pigment of the first metal member changes from the second color to the first color when heated; The second refrigeration plate is controlled to cool to lower the temperature of the second metal part, so that the heat-sensitive pigment of the second metal part changes from the second color to the first color when heated.

9. The demonstration method according to claim 8, characterized in that: Controlling the first refrigeration plate to cool to lower the temperature of the first metal part so that the heat-sensitive pigment of the first metal part changes from the second color to the first color when heated; comprising: controlling the first radiator to dissipate heat from the hot surface of the first cooling fin to reduce the temperature of the hot surface of the first cooling fin; Controlling the second refrigeration plate to cool the second metal piece to reduce the temperature of the second metal piece so that the heat-sensitive pigment of the second metal piece changes from the second color to the first color when heated; comprising: The second radiator is controlled to dissipate heat to the hot surface of the second cooling fin to reduce the temperature of the hot surface of the second cooling fin.

10. The demonstration method according to claim 8, characterized in that: Controlling the first radiator to dissipate heat from the hot surface of the first refrigeration fin to reduce the temperature of the hot surface of the first refrigeration fin; comprising: receiving a first temperature signal from a first temperature sensor; determining whether the first temperature is greater than or equal to a predetermined value, and if so, controlling the first radiator to dissipate heat to the hot surface of the first cooling fin; Controlling the second radiator to dissipate heat from the hot surface of the second refrigeration fin to reduce the temperature of the hot surface of the second refrigeration fin; comprising: receiving a second temperature signal from a second temperature sensor; It is determined whether the second temperature is greater than or equal to a predetermined value. If so, the second radiator is controlled to dissipate heat to the hot surface of the second cooling fin.

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