Radiation refrigeration power measuring device capable of automatically following light

Abstract

The utility model discloses a radiation refrigeration power measuring device capable of automatically following light. Comprising a light sensor, a groove-shaped bracket, a windproof and moisture-proof protective film, a thermocouple, a sample table, a heat conducting plate, a heating film, a temperature sensor, a connecting block, a connecting rod, a motor, a first transmission wheel, a photosensitive controller, a heating power controller, a radiation refrigeration power display screen, a power supply, a transmission belt, a fixed block, a supporting plate, a second transmission wheel, a rotating shaft, a base and a box body. The radiation heat energy testing device can directly measure the radiation heat energy generated by the radiation refrigeration material, realizes accurate control of the refrigeration process, realizes effective and accurate testing of the radiation refrigeration power, and improves the testing efficiency and the refrigeration effect.

Description

Technical Field

[0001] The utility model relates to the field of radiation refrigeration, in particular to an automatic light-chasing radiation refrigeration power measuring device. Background Art

[0002] In the field of thermal management, radiative cooling is an important and effective technology for temperature control and thermal energy balance. Radiative cooling uses the principle of radiative heat transfer to achieve cooling effects through the transfer of radiant heat energy. Radiative cooling technology is widely used in aerospace science, electronic equipment, industrial refrigeration and other fields, and has attracted widespread attention due to its high efficiency, no noise and no pollution.

[0003] The main principle of radiative cooling is to reflect the energy of the solar band (0.3-2.5μm) and increase the emissivity of the atmospheric window band (mainly 8-13μm) to emit heat into deep space through the atmospheric window, thereby reducing the temperature below the ambient temperature even under the sun. With the in-depth study of radiative cooling technology, the measurement of the cooling power of materials has become an indispensable part.

[0004] However, there are some challenges in testing the radiative cooling power. The traditional test method uses indirect measurement, that is, calculating the radiative cooling power by measuring the temperature difference before and after the cooling system. However, this method has problems such as low accuracy, complex experiments, and high time consumption. Utility Model Content

[0005] In view of the deficiencies in the prior art, the technical problem to be solved by the utility model is to provide a radiation cooling power measurement device with automatic light tracking.

[0006] The utility model solves the technical problem by providing a radiation cooling power measuring device with automatic light tracking, characterized in that the device comprises a light sensor, a groove bracket, a windproof and moisture-proof protective film, a thermocouple, a sample stage, a heat conducting plate, a heating film, a temperature sensor, a connecting block, a connecting rod, a motor, a first transmission wheel, a photosensitive controller, a heating power controller, a radiation cooling power display screen, a power supply, a transmission belt, a fixing block, a support plate, a second transmission wheel, a rotating shaft, a base and a box body;

[0007] The support plate is fixed inside the box; the photosensitive controller is arranged inside the box; the housing of the motor is fixed on the inner wall of the box, and a first transmission wheel is fixed on the output end; the photosensitive controller is connected to the motor for communication to control the start and stop of the motor; the base is fixed on the support plate, and the fixing block is fixed on the top inner wall of the box; the two ends of the rotating shaft are rotatably installed in the fixing block and the base; a second transmission wheel is fixed on the rotating shaft; the first transmission wheel and the second transmission wheel are connected through a transmission belt;

[0008] One end of the connecting rod passes through the top of the box body and is rotatably installed in the fixed block, and this end is fixedly connected to the rotating shaft; the bottom of the groove-type bracket is fixed to the other end of the connecting rod through the connecting block, and the rotation of the connecting rod drives the groove-type bracket to rotate; a light sensor is arranged on the groove-type bracket to sense the intensity change of the ambient light; the light sensor is connected to the photosensitive controller for communication; a heating film, a heat conducting plate and a sample stage are arranged in the groove of the groove-type bracket from bottom to top;

[0009] The heating power controller is arranged inside the box; the heating power controller is connected to the heating film in communication to control the heating temperature of the heating film; the heating film, the heat conducting plate and the sample stage are in close contact with each other, and the heating film transfers heat to the heat conducting plate, the sample stage and the lower surface of the sample in the sample stage; the windproof and moisture-proof protective film is encapsulated on the surface of the sample stage, and the space between the windproof and moisture-proof protective film and the sample stage is sealed to form a sealed environment for the sample; the thermocouple is placed in the sealed environment to measure the temperature of the sealed environment; the temperature sensor is arranged on the bottom of the heating film to monitor the temperature of the heating film and then measure the temperature of the lower surface of the sample in the sample stage; the thermocouple and the temperature sensor are both connected to the heating power controller in communication;

[0010] The power supply is arranged inside the box body for supplying power to the whole device; the radiation cooling power display screen is arranged on the surface of the box body, and is connected with the heating power controller for displaying the radiation cooling power of the radiation cooling material.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] (1) The utility model can directly measure the radiant heat energy generated by the radiant refrigeration material, realize precise control of the refrigeration process, and achieve effective and accurate testing of the radiant refrigeration power, thereby improving the testing efficiency and refrigeration effect.

[0013] (2) The utility model can realize automatic light tracking, so that the contact area of ​​sunlight is always maximized, and the measured radiation cooling power is more accurate.

[0014] (3) The utility model effectively improves the uniformity of the cooling effect and avoids local temperature differences through the combination of the groove-type bracket and the heat-conducting plate.

[0015] (4) The utility model can achieve high energy efficiency, uniform cooling effect, and reduce costs. It has a compact structure and occupies little space, and is suitable for places with different space restrictions. It also has the characteristics of high-precision temperature control, simplified experimental process, automatic search for the appropriate sun angle, and convenient operation.

[0016] (5) The utility model can be used in laboratories, external environments and the like, and can be widely applied to refrigeration needs in different fields. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 For the utility model Figure 1 Schematic diagram of the enlarged structure of area A in FIG.

[0019] Figure 3 For the utility model Figure 1 Schematic diagram of the enlarged structure of area B in FIG.

[0020] In the figure, a light sensor 1, a groove-shaped bracket 2, a windproof and moisture-proof protective film 3, a thermocouple 4, a sample table 5, a heat conducting plate 6, a heating film 7, a temperature sensor 8, a connecting block 9, a supporting block 10, a connecting rod 11, an annular fixer 12, a motor 13, a first transmission wheel 14, a photosensor 15, a heating power controller 16, a radiation cooling power display screen 17, a power supply 18, a transmission belt 19, a fixing block 20, a supporting plate 21, a second transmission wheel 22, a rotating shaft 23, a base 24, and a box 25. DETAILED DESCRIPTION

[0021] The specific embodiments of the present invention are given below. The specific embodiments are only used to further illustrate the present invention in detail and do not limit the protection scope of the claims of the present invention.

[0022] The utility model provides a radiation cooling power measuring device (hereinafter referred to as the device) with automatic light chasing, characterized in that the device comprises a light sensor 1, a groove bracket 2, a windproof and moisture-proof protective film 3, a thermocouple 4, a sample stage 5, a heat conducting plate 6, a heating film 7, a temperature sensor 8, a connecting block 9, a connecting rod 11, a motor 13, a first transmission wheel 14, a photosensitive controller 15, a heating power controller 16, a radiation cooling power display screen 17, a power supply 18, a transmission belt 19, a fixing block 20, a support plate 21, a second transmission wheel 22, a rotating shaft 23, a base 24 and a box 25;

[0023] The support plate 21 is fixed to the inside of the box 25, dividing the box 25 into a space for placing the transmission components and a space for placing the output radiation cooling power components; the photosensitive controller 15 is arranged inside the box 25, located in the space for placing the transmission components; the housing of the motor 13 is fixed to the inner wall of the box 25, and a first transmission wheel 14 is fixed to the output end; the photosensitive controller 15 is connected to the motor 13 for communication, and controls the start and stop of the motor 13; the base 24 is fixed to the support plate 21, and the fixing block 20 is fixed to the top inner wall of the box 25; the two ends of the rotating shaft 23 are rotatably installed in the fixing block 20 and the base 24; a second transmission wheel 22 is fixed to the rotating shaft 23; the first transmission wheel 14 and the second transmission wheel 22 are connected by a transmission belt 19;

[0024] One end of the connecting rod 11 passes through the top of the box 25, is rotatably installed in the fixed block 20, and this end is fixedly connected to the rotating shaft 23; the bottom of the groove-shaped bracket 2 is fixed to the other end of the connecting rod 11 through the connecting block 9, and the rotation of the connecting rod 11 drives the groove-shaped bracket 2 to rotate; a light sensor 1 is arranged on the groove-shaped bracket 2 to sense the intensity change of the ambient light; the light sensor 1 is connected to the photosensitive controller 15 for communication; a heating film 7, a heat conducting plate 6 and a sample stage 5 are arranged in the groove of the groove-shaped bracket 2 from bottom to top;

[0025] The heating power controller 16 is arranged inside the box 25, located in the space where the output radiation cooling power component is placed; the heating power controller 16 is connected to the heating film 7 for communication, and controls the heating temperature of the heating film 7; the heating film 7, the heat conducting plate 6 and the sample stage 5 are in close contact with each other, and the heating film 7 transfers heat to the heat conducting plate 6, the sample stage 5 and the lower surface of the sample in the sample stage 5; the windproof and moisture-proof protective film 3 is encapsulated on the surface of the sample stage 5, and the space between the windproof and moisture-proof protective film 3 and the sample stage 5 is sealed while preventing wind and moisture, so as to form a sealed environment in which the sample is located, aiming to simulate the working conditions in the actual refrigeration system and provide a suitable heat exchange surface; the thermocouple 4 is placed in the sealed environment (in this embodiment, it is the edge of the sample stage 5 arranged in the sealed environment) for measuring the temperature of the sealed environment; the temperature sensor 8 is arranged on the bottom of the heating film 7 for monitoring the temperature of the heating film 7, and then measuring the temperature of the lower surface of the sample in the sample stage 5 (that is, the surface of the sample in contact with the sample stage 5, that is, the refrigeration area); the thermocouple 4 and the temperature sensor 8 are both connected to the heating power controller 16 for communication;

[0026] The power supply 18 is arranged inside the box body 25, in the space where the output radiation cooling power component is placed, and is used to supply power to the entire device; the radiation cooling power display screen 17 is arranged on the surface of the box body 25, in the space where the output radiation cooling power component is placed, and is communicatively connected with the heating power controller 16, and is used to display the radiation cooling power of the radiation cooling material.

[0027] Preferably, the angle between the connecting block 9 and the horizontal plane is 60°.

[0028] Preferably, the device further comprises a support block 10 ; the support block 10 is fixed between the connecting block 9 and the connecting rod 11 .

[0029] Preferably, the device further comprises an annular fixer 12 ; the annular fixer 12 is fixed to the outer wall of the top of the box body 25 and is nested on the outer side of the connecting rod 11 , so as to further reinforce the installation of the connecting rod 11 and further ensure the stability of the groove-type bracket 2 .

[0030] Preferably, light sensors 1 are provided at both ends of the convex portion of the groove-shaped bracket 2 .

[0031] Preferably, the material of the windproof and moisture-proof protective film 3 is PE, and the material of the heat conducting plate 6 is copper.

[0032] The working principle and workflow of the utility model are:

[0033] The radiation cooling material sample is placed in the sample table 5 and isolated from the air through the windproof and moisture-proof protective film 3; then as the position of the sun changes, the light intensity becomes weaker, at this time the light sensor 1 transmits the light signal to the photosensitive controller 15, the photosensitive controller 15 controls the motor 13 to rotate, and then drives the first transmission wheel 14 to rotate, and transmits it to the second transmission wheel 22 through the transmission belt 19, the second transmission wheel 22 drives the rotating shaft 23 to rotate, the rotating shaft 23 drives the connecting rod 11 to rotate, and then the groove-shaped bracket 2 is rotated to the appropriate position in real time, so that the sample always receives the maximum amount of sunlight, and reduces the error of the radiation cooling power due to insufficient light;

[0034] Due to the maximum reception of sunlight, the temperature in the sealed environment increases; at the same time, the sample absorbs sunlight, the temperature of the upper surface of the sample increases, but due to the presence of the sample, the temperature drops slowly, and the temperature of the lower surface of the sample is not as high as the temperature in the sealed environment, which causes a temperature difference between the lower surface of the sample and the environment; then the temperature of the sealed environment is measured by the thermocouple 4, and the temperature of the lower surface of the sample is measured by the temperature sensor 8, and the two temperature data are transmitted to the heating power controller 16; the heating power controller 16 controls the heating film 7 to start heating the heat conducting plate 6 according to the temperature difference between the two temperatures, so that the temperature of the lower surface of the sample remains the same as the ambient temperature. At this time, the heating power generated by the heating film 7 is the radiation cooling power of the radiation cooling material and is displayed on the radiation cooling power display screen 17.

[0035] Anything not described in the present invention is applicable to the prior art.

Claims

1. A radiation cooling power measurement device with automatic light tracking, characterized in that: The device comprises a light sensor (1), a groove-shaped bracket (2), a windproof and moisture-proof protective film (3), a thermocouple (4), a sample stage (5), a heat-conducting plate (6), a heating film (7), a temperature sensor (8), a connecting block (9), a connecting rod (11), a motor (13), a first transmission wheel (14), a light-sensitive controller (15), a heating power controller (16), a radiation cooling power display screen (17), a power supply (18), a transmission belt (19), a fixing block (20), a support plate (21), a second transmission wheel (22), a rotating shaft (23), a base (24) and a box (25); The support plate (21) is fixed inside the box (25); the photosensitive controller (15) is arranged inside the box (25); the housing of the motor (13) is fixed on the inner wall of the box (25), and the first transmission wheel (14) is fixed on the output end; the photosensitive controller (15) is connected to the motor (13) for communication and controls the start and stop of the motor (13); the base (24) is fixed on the support plate (21), and the fixing block (20) is fixed on the top inner wall of the box (25); the two ends of the rotating shaft (23) are rotatably installed in the fixing block (20) and the base (24); the second transmission wheel (22) is fixed on the rotating shaft (23); the first transmission wheel (14) and the second transmission wheel (22) are connected through a transmission belt (19); One end of the connecting rod (11) passes through the top of the box (25) and is rotatably installed in the fixed block (20), and this end is fixedly connected to the rotating shaft (23); the bottom of the groove-shaped bracket (2) is fixed to the other end of the connecting rod (11) through the connecting block (9), and the rotation of the connecting rod (11) drives the groove-shaped bracket (2) to rotate; a light sensor (1) is arranged on the groove-shaped bracket (2) for sensing the intensity change of the ambient light; the light sensor (1) is connected to the light sensitive controller (15) for communication; a heating film (7), a heat conducting plate (6) and a sample stage (5) are arranged in the groove of the groove-shaped bracket (2) from bottom to top; The heating power controller (16) is arranged inside the box (25); the heating power controller (16) is connected to the heating film (7) in communication with each other to control the heating temperature of the heating film (7); the heating film (7), the heat conducting plate (6) and the sample stage (5) are in close contact with each other, and the heating film (7) transfers heat to the heat conducting plate (6), the sample stage (5) and the lower surface of the sample in the sample stage (5); the windproof and moisture-proof protective film (3) is encapsulated on the surface of the sample stage (5) to seal the space between the windproof and moisture-proof protective film (3) and the sample stage (5) to form a sealed environment for the sample; the thermocouple (4) is placed in the sealed environment to measure the temperature of the sealed environment; the temperature sensor (8) is arranged on the bottom of the heating film (7) to monitor the temperature of the heating film (7) and then measure the temperature of the lower surface of the sample in the sample stage (5); the thermocouple (4) and the temperature sensor (8) are both connected to the heating power controller (16) in communication with each other; A power source (18) is arranged inside the box (25) for supplying power to the entire device; a radiation cooling power display screen (17) is arranged on the surface of the box (25) and is communicatively connected with the heating power controller (16) for displaying the radiation cooling power of the radiation cooling material.

2. The automatic light-chasing radiation cooling power measurement device according to claim 1, characterized in that: The angle between the connecting block (9) and the horizontal plane is 60°.

3. The automatic light-chasing radiation cooling power measurement device according to claim 1, characterized in that: The device also includes a support block (10); the support block (10) is fixed between the connecting block (9) and the connecting rod (11).

4. The automatic light-chasing radiation cooling power measurement device according to claim 1, characterized in that: The device also includes an annular fixer (12); the annular fixer (12) is fixed to the outer wall of the top of the box body (25) and is nested on the outer side of the connecting rod (11) to further reinforce the installation of the connecting rod (11) and further ensure the stability of the groove-type bracket (2).

5. The automatic light-chasing radiation cooling power measurement device according to claim 1, characterized in that: Both ends of the convex part of the groove-shaped bracket (2) are provided with light sensors (1).

6. The automatic light-chasing radiation cooling power measurement device according to claim 1, characterized in that: The material of the windproof and moisture-proof protective film (3) is PE; the material of the heat conducting plate (6) is copper.

7. The automatic light-chasing radiation cooling power measurement device according to claim 1, characterized in that: The supporting plate (21) divides the box body (25) into a space for placing transmission components and a space for placing output radiation cooling power components.

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