Energy-consumption-free regulation and control three-mode shutter based on self-adaptive radiation refrigeration technology

Abstract

The invention provides an energy-consumption-free regulation and control three-mode shutter based on a self-adaptive radiation refrigeration technology, and belongs to the technical field of radiation refrigeration. The invention aims to solve the problems that the louver wastes energy and is inconvenient to use. A plurality of self-adaptive radiation refrigeration blades are arranged on the inner side of a window frame in parallel, and the two ends of each self-adaptive radiation refrigeration blade are connected with the window frame through blade rotating shafts; the transmission rod is installed in the window frame and connected with a plurality of same connecting rods, the other sides of the connecting rods are rotationally connected with the large gear, the large gear is in transmission with the small gear through a chain, and the small gear is rotationally connected with the blade rotating shaft. The piston is arranged in the cylinder barrel and connected with the cylinder barrel in a sealed mode, the front portion and the rear portion of the cylinder barrel are connected with the front end cover and the rear end cover in a sealed mode respectively, phase-change materials are arranged between the piston and the rear end cover, and a reset device is arranged on the lower portion of the transmission rod. The blades can be adjusted and controlled in a self-adaptive mode according to the environment temperature, and the problems that shutters waste energy and are not convenient to use are solved.

Description

Technical Field

[0001] This invention belongs to the field of radiative cooling technology, and in particular relates to a three-mode louver with zero energy consumption control based on adaptive radiative cooling technology. Background Technology

[0002] Windows, as a core component of buildings, play a crucial role in lighting, ventilation, and spatial interaction. As an important accessory to windows, louvers are seeing their application scenarios and functional requirements continuously upgrade with the development of building energy conservation and smart technologies. Currently, most louvers on the market are manually or electrically controlled, and generally suffer from two major limitations: First, their function is limited, focusing only on aesthetic optimization or basic opening angle control, lacking the ability to actively regulate indoor temperature and failing to adapt to the thermal environment requirements of different seasons; second, energy consumption and operation are significant issues. Manual control requires human intervention and lacks convenience, while electric control relies on continuous power supply, resulting in high energy consumption over long-term operation, making it difficult to meet the current trend of low-carbon building development.

[0003] For example, patent CN202221038751.9 discloses a multifunctional louver that can collect solar energy to heat the room. Its drawback is that it cannot effectively regulate the indoor temperature in hot weather, and the louver has a complex shape and high installation cost. Patent CN202221799195.7 discloses a method that automatically adjusts the opening angle of the louvers by controlling a power module via a terminal. The limitation of this solution is that its adjustment method relies on electric drive, which will lead to significant energy consumption over long-term operation.

[0004] In conclusion, there is an urgent need to design a type of blind that can adaptively adjust to ambient temperature, solving the problems of blinds that are mostly manually or electrically controlled, wasting energy and being inconvenient to use. Through zero-energy temperature control, it can help alleviate global warming. Summary of the Invention

[0005] A brief overview of the invention is given below to provide a basic understanding of certain aspects of it. It should be understood that this overview is not an exhaustive summary of the invention. It is not intended to identify key or essential parts of the invention, nor is it intended to limit the scope of the invention. Its purpose is merely to present certain concepts in a simplified form as a prelude to the more detailed description that follows.

[0006] In view of this, in order to solve the problem that most venetian blinds are manually or electrically controlled, which wastes energy and is inconvenient to use, this invention provides a three-mode venetian blind with zero energy consumption control based on adaptive radiative cooling technology.

[0007] Solution: A three-mode louver with zero energy consumption based on adaptive radiative cooling technology, comprising a three-mode louver body, a phase change storage transmission device, and a mechanical transmission device;

[0008] The main body of the three-mode louver includes a window frame, adaptive radiative cooling blades and blade pivots. Multiple adaptive radiative cooling blades are arranged in parallel on the inner side of the window frame, and each adaptive radiative cooling blade is connected to the window frame at both ends through a blade pivot.

[0009] The mechanical transmission device includes a transmission rod, a connecting rod, a large gear, and a small gear. The transmission rod is installed inside the window frame, and multiple identical connecting rods are connected to the transmission rod. The other side of the connecting rod is rotatably connected to the large gear. The large gear and the small gear are driven by a chain, and the small gear is rotatably connected to the blade shaft.

[0010] The phase change storage transmission device includes a reset device, a piston, a sealing device, a cylinder, a front end cover, a rear end cover, and a phase change material. The lower end of the transmission rod is sealed to the piston. The piston is disposed inside the cylinder and sealed to the cylinder. The front end cover and the rear end cover are sealed to the cylinder at the front and rear ends, respectively. The phase change material is installed between the piston and the rear end cover. The reset device is installed at the lower part of the transmission rod.

[0011] Furthermore, the adaptive radiation cooling blade is coated with an adaptive radiation cooling coating.

[0012] Furthermore, the method for preparing the adaptive radiation cooling coating includes the following steps:

[0013] Step 1: Weigh out the deionized water, polymer emulsion, and functional additives according to their weight proportions, and stir to disperse them to form a mixed solution;

[0014] Step 2: Add solar reflective particles, atmospheric window band emission particles, and thermochromic particles to the mixed solution according to the weight proportions, stir and disperse to form a radiation cooling coating.

[0015] Step 3: Apply the radiation cooling coating to the substrate and cure it to obtain the radiation cooling functional coating.

[0016] Furthermore, in steps one and two, there are 10-20 parts of deionized water, 20-30 parts of polymer emulsion, 10-18 parts of functional additives, 30-60 parts of solar reflective particles, 5-20 parts of atmospheric window band emitting particles, and 1-5 parts of thermochromic particles.

[0017] Furthermore, the functional additives in step one include the following raw materials in parts by weight: 1-3 parts dispersant, 1-3 parts leveling agent, 0.5-1.5 parts defoamer, 2-3 parts wetting agent, and 3-5 parts film-forming aid.

[0018] Furthermore, the polymer emulsion described in step two includes acrylic acid, pure acrylic acid, polyurethane, epoxy, acrylic emulsion, silicone PVDF, PMMA, and PDMS.

[0019] Furthermore, the solar reflective particles mentioned in step two include TiO2, BaSO4, CaCO3, and Al2O3, while the atmospheric window band emission particles include SiO2 and ZrO2.

[0020] Furthermore, the adaptive radiation cooling coating has a visible light reflectance of not less than 90% at high temperatures and not more than 50% at low temperatures.

[0021] Furthermore, the thermochromic nanoparticles are composed of a colorant, a color developer, and a phase change material. The colorant includes crystal violet lactone, the color developer includes bisphenol A, and the phase change material includes long-chain alkyl alcohol phase change materials.

[0022] Furthermore, the cylinder is equipped with sealing devices at the sealing connections between the front cover and the rear cover.

[0023] Furthermore, the large gear and the small gear can rotate 180°.

[0024] Furthermore, the rotation angle of the large gear is 1:2 with that of the small gear.

[0025] Furthermore, the large gear drives the connecting rod to rotate 90°.

[0026] The present invention has the following advantages over the prior art:

[0027] 1. This invention enables louvers to have zero-energy temperature control capabilities by coating the surface of adaptive radiation cooling blades with an adaptive radiation cooling coating, directly solving the core problems of "high energy consumption and large carbon dioxide emissions" in the current indoor temperature control process, and providing technical support for the building sector to practice the low-carbon concept and alleviate global warming.

[0028] 2. In this invention, by installing a phase change storage transmission device, when the ambient temperature reaches the threshold of the phase change material, it will deform through phase change, thereby realizing the automatic adjustment of the angle of the adaptive radiation cooling blades. No manual operation or electric drive is required. This solves the pain points of traditional louvers, such as "inconvenience of use and high energy consumption", and meets the market demand for low-consumption and convenient products. Attached Figure Description

[0029] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this invention, illustrate exemplary embodiments of the invention and are used to explain the invention, but do not constitute an undue limitation of the invention. In the drawings:

[0030] Figure 1 This is a structural diagram of a three-mode louver with zero energy consumption control based on adaptive radiative cooling technology.

[0031] Figure 2 This is a schematic diagram of the mechanical transmission device.

[0032] Figure 3 This is a cross-sectional view of a phase change storage transmission device;

[0033] Figure 4 Diagram showing the positional relationship of the adaptive radiation cooling blades;

[0034] Figure 5 The spectral radiation characteristics of the adaptive radiation cooling coating at different temperatures are shown in the figure.

[0035] In the diagram: 1-Three-mode louver body, 2-Phase change storage transmission device, 3-Mechanical transmission device, 11-Window frame, 21-Reset device, 22-Piston, 23-Sealing device, 24-Cylinder, 25-Front end cover, 26-Rear end cover, 27-Phase change material, 31-Transmission rod, 32-Connecting rod, 33-Large gear, 34-Small gear, 41-Adaptive radiation cooling blade, 42-Blade shaft. Detailed Implementation

[0036] To make the technical solutions and advantages of the embodiments of the present invention clearer, the exemplary embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not an exhaustive list of all embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0037] Example 1, Reference Figure 1-5 This embodiment describes a three-mode louver with zero energy consumption control based on adaptive radiative cooling technology, comprising a three-mode louver body 1, a phase change storage transmission device 2, and a mechanical transmission device 3.

[0038] The three-mode venetian blind body 1 includes a window frame 11, adaptive radiation cooling blades 41 and blade rotating shafts 42. Multiple adaptive radiation cooling blades 41 are arranged parallel to each other on the inner side of the window frame 11. Both ends of each adaptive radiation cooling blade 41 are connected to the window frame 11 through the blade rotating shafts 42.

[0039] The mechanical transmission device 3 includes a transmission rod 31, a connecting rod 32, a large gear 33, and a small gear 34. The transmission rod 31 is installed inside the window frame 11. Multiple identical connecting rods 32 are connected to the transmission rod 31. The other side of the connecting rod 32 is rotatably connected to the large gear 33. The large gear 33 and the small gear 34 are driven by a chain. The small gear 34 is rotatably connected to the blade shaft 42.

[0040] The phase change storage transmission device 2 includes a reset device 21, a piston 22, a sealing device 23, a cylinder 24, a front cover 25, a rear cover 26, and a phase change material 27. The lower end of the transmission rod 31 is sealed to the piston 22. The piston 22 is disposed inside the cylinder 24 and sealed to the cylinder 24. The cylinder 24 is sealed to the front cover 25 and the rear cover 26 at the front and rear ends, respectively. The phase change material 27 is installed between the piston 22 and the rear cover 26. The reset device 21 is installed at the lower part of the transmission rod 31.

[0041] Furthermore, the adaptive radiation cooling blade 41 is coated with an adaptive radiation cooling coating.

[0042] Furthermore, the method for preparing the adaptive radiation cooling coating includes the following steps:

[0043] Step 1: Weigh out the deionized water, polymer emulsion, and functional additives according to their weight proportions, and stir to disperse them to form a mixed solution;

[0044] Step 2: Add solar reflective particles, atmospheric window band emission particles, and thermochromic particles to the mixed solution according to the weight proportions, stir and disperse to form a radiation cooling coating.

[0045] Step 3: Apply the radiation cooling coating to the substrate and cure it to obtain the radiation cooling functional coating.

[0046] Furthermore, in steps one and two, there are 10-20 parts of deionized water, 20-30 parts of polymer emulsion, 10-18 parts of functional additives, 30-60 parts of solar reflective particles, 5-20 parts of atmospheric window band emitting particles, and 1-5 parts of thermochromic particles.

[0047] Furthermore, the functional additives in step one include the following raw materials in parts by weight: 1-3 parts dispersant, 1-3 parts leveling agent, 0.5-1.5 parts defoamer, 2-3 parts wetting agent, and 3-5 parts film-forming aid.

[0048] Furthermore, the polymer emulsion described in step two includes acrylic acid, pure acrylic acid, polyurethane, epoxy, acrylic emulsion, silicone PVDF, PMMA, and PDMS.

[0049] Furthermore, the solar reflective particles mentioned in step two include TiO2, BaSO4, CaCO3, and Al2O3, while the atmospheric window band emission particles include SiO2 and ZrO2.

[0050] Furthermore, the adaptive radiation cooling coating has a visible light reflectance of not less than 90% at high temperatures and not more than 50% at low temperatures.

[0051] Furthermore, the thermochromic nanoparticles are composed of a colorant, a color developer, and a phase change material. The colorant includes crystal violet lactone, the color developer includes bisphenol A, and the phase change material includes long-chain alkyl alcohol phase change materials.

[0052] Furthermore, the cylinder 24 is equipped with sealing devices 23 at the sealing connection points with the front cover 25 and the rear cover 26.

[0053] Furthermore, the large gear 33 and the small gear 34 can rotate 180°.

[0054] Furthermore, the rotation angle of the large gear 33 is 1:2 with that of the small gear 34.

[0055] Furthermore, the large gear 33 can drive the connecting rod to rotate 90°.

[0056] Example 2, Reference Figure 1-5 This embodiment describes the workflow of a zero-energy-consumption-controlled three-mode louver based on adaptive radiative cooling technology, specifically including the following steps:

[0057] S1. The cylinder 24 is filled with a phase change material 27 (n-hexadecane), and the adaptive radiation cooling blades 41 are coated with an adaptive radiation cooling coating on both the front and back blades.

[0058] S2. When the ambient temperature rises from low to medium and exceeds the threshold of the phase change material 27, the phase change material 27 melts and expands, causing a change in volume that drives the piston 22 to move. This displacement of the piston 22 drives the transmission rod 31 upwards, which in turn drives the connecting rod 32 to move. The displacement of the connecting rod 32 then drives the large gear 33 to rotate. The rotation of the large gear 33 drives the small gear 34 to rotate, simultaneously causing the blade shaft 42 to rotate. The blade shaft 42 and its connected adaptive radiation cooling blade 41 rotate 50°, transitioning from the illumination state to the adaptive radiation cooling state. At this point, the adaptive radiation cooling blade exhibits a heat-collecting state, and its color is darker.

[0059] S3. When the ambient temperature rises from medium temperature to high temperature and exceeds the phase transition threshold of thermochromic nanoparticles, the adaptive radiation cooling blades exhibit a cooling state and their color is lighter.

[0060] S4. When the ambient temperature drops from high temperature to medium temperature and exceeds the phase transition threshold of the thermochromic nanoparticles, the adaptive radiation cooling blade 41 will return to the heat collection state and its color will be darker.

[0061] S5. When the ambient temperature drops from medium temperature to low temperature and exceeds the threshold of phase change material 27, the phase change material solidifies and shrinks. At this time, the reset device 21 performs work on the transmission rod 31, causing the transmission rod 31 to drive the piston 22 to move downward together. At the same time as the transmission rod 31 moves, it drives the connecting rod 32 to move. The displacement of the connecting rod 32 drives the large gear 33 to rotate. The rotation of the large gear 33 drives the small gear 34, and at the same time drives the blade shaft 42 to rotate. The blade shaft 42 and its connected adaptive radiation cooling blade 41 rotate 50°, rotating from the adaptive radiation cooling state to the illumination state.

[0062] Example 3, Reference Figure 1-5 This embodiment describes the workflow of a zero-energy-consumption-controlled three-mode louver based on adaptive radiative cooling technology, specifically including the following steps:

[0063] S1. The cylinder 24 is filled with two phase change materials 27 (a mixture of n-hexadecane, n-octadecane and n-heptadecane), and the adaptive radiation cooling blades 41 are coated with an adaptive radiation cooling coating and a carbon black heat-absorbing coating on their front and back sides, respectively.

[0064] S2. When the ambient temperature rises from low temperature to medium low temperature and exceeds the threshold of phase change material 27 (n-hexadecane), the phase change material 27 melts and expands, causing a change in volume, which in turn drives piston 22 to move. The displacement of piston 22 drives transmission rod 31 upward, which in turn drives connecting rod 32 to move. The displacement of connecting rod 32 drives large gear 33 to rotate. The rotation of large gear 33 drives small gear 34 to rotate, and at the same time drives blade shaft 42 to rotate. Blade shaft 42 and its connected adaptive radiation cooling blade 41 rotate 130° from strong heat collection state to light-illuminated state.

[0065] S3. When the ambient temperature rises from low to medium temperature and exceeds the threshold of its phase change material 27 (a mixture of n-octadecane and n-heptadecane), the phase change material 27 melts and expands, causing a change in volume. This drives the piston 22 to move. The piston 22 moves upward, causing the transmission rod 31 to move, which in turn moves the connecting rod 32. The connecting rod 32 moves, causing the large gear 33 to rotate. The rotation of the large gear 33 causes the small gear 34 to rotate, which in turn drives the blade shaft 42 to rotate. The blade shaft 42 and its connected adaptive radiation cooling blade 41 rotate 50° from the illumination state to the adaptive radiation cooling state. At this time, the adaptive radiation cooling blade 41 exhibits a heat collection state, and its color is darker.

[0066] S4. When the ambient temperature rises from medium temperature to high temperature and exceeds the phase transition threshold of thermochromic nanoparticles, the adaptive radiation cooling blade 41 exhibits a cooling state and its color is lighter.

[0067] S5. When the ambient temperature drops from high temperature to medium temperature and exceeds the phase transition threshold of the thermochromic nanoparticles, the adaptive radiation cooling blade 41 will return to the heat collection state and its color will be darker.

[0068] S6. When the ambient temperature drops from medium temperature to medium-low temperature and exceeds the threshold of phase change material 27 (a mixture of n-octadecane and n-heptadecane), the phase change material solidifies and shrinks. At this time, the reset device 21 performs work on the transmission rod 31, causing the transmission rod 31 to drive the piston 22 to move downward together. At the same time as the transmission rod 31 moves, it drives the connecting rod 32 to move. The displacement of the connecting rod 32 drives the large gear 33 to rotate. The rotation of the large gear 33 drives the small gear 34, and at the same time drives the blade shaft 42 to rotate. The blade shaft 42 and its connected adaptive radiation cooling blade 41 rotate 50°, rotating from the adaptive radiation cooling state to the illumination state.

[0069] S7. When the ambient temperature drops from medium-low temperature to low temperature and exceeds the threshold of phase change material 27 (n-hexadecane), the phase change material solidifies and shrinks. At this time, the reset device 21 performs work on the transmission rod 31, causing the transmission rod 31 to drive the piston 22 to move downward together. At the same time as the transmission rod 31 moves, it drives the connecting rod 32 to move. The displacement of the connecting rod 32 drives the large gear 33 to rotate. The rotation of the large gear 33 drives the small gear 34, and at the same time drives the blade shaft 42 to rotate. The blade shaft 42 and its connected adaptive radiation cooling blade 41 rotate 130°, rotating from the illumination state to the strong heat collection state.

[0070] By coating the surface of the adaptive radiation cooling blades with an adaptive radiation cooling coating, the louvers are equipped with zero-energy temperature control capabilities, directly solving the core problems of "high energy consumption and large carbon dioxide emissions" in the current indoor temperature control process. At the same time, it provides technical support for the building sector to practice the low-carbon concept and alleviate global warming.

[0071] The phase change storage transmission device installed in this invention will cause deformation through phase change when the ambient temperature reaches the threshold of the phase change material, thereby realizing the automatic adjustment of the angle of the adaptive radiation cooling blades without manual operation or electric drive. This solves the pain points of traditional louvers, such as "inconvenience of use and high energy consumption", and meets the market demand for low-consumption and convenient products.

[0072] Although the invention has been described with reference to a limited number of embodiments, those skilled in the art will understand from the foregoing description that other embodiments are conceivable within the scope of the invention described herein. Furthermore, it should be noted that the language used in this specification has been chosen primarily for readability and instructional purposes, and not for the purpose of interpreting or limiting the subject matter of the invention. Therefore, many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the appended claims. The disclosure of the invention is illustrative and not restrictive, and the scope of the invention is defined by the appended claims.

Claims

1. A three-mode louver with zero energy consumption control based on adaptive radiative cooling technology, characterized in that, It includes a three-mode louver body (1), a phase change storage transmission device (2), and a mechanical transmission device (3). The three-mode louver body (1) includes a window frame (11), adaptive radiation cooling blades (41) and blade pivot (42). Multiple adaptive radiation cooling blades (41) are arranged parallel to each other on the inner side of the window frame (11). Both ends of each adaptive radiation cooling blade (41) are connected to the window frame (11) through the blade pivot (42). The mechanical transmission device (3) includes a transmission rod (31), a connecting rod (32), a large gear (33) and a small gear (34). The transmission rod (31) is installed inside the window frame (11). Multiple identical connecting rods (32) are connected to the transmission rod (31). The other side of the connecting rod (32) is rotatably connected to the large gear (33). The large gear (33) and the small gear (34) are driven by a chain. The small gear (34) is rotatably connected to the blade shaft (42). The phase change storage transmission device (2) includes a reset device (21), a piston (22), a sealing device (23), a cylinder (24), a front end cover (25), a rear end cover (26), and a phase change material (27). The lower end of the transmission rod (31) is sealed to the piston (22). The piston (22) is located inside the cylinder (24) and is sealed to the cylinder (24). The cylinder (24) is sealed to the front end cover (25) and the rear end cover (26) at the front and rear ends, respectively. The phase change material (27) is installed between the piston (22) and the rear end cover (26). The lower part of the transmission rod (31) is equipped with a reset device (21).

2. The energy-saving adjustable three-mode louver based on adaptive radiative cooling technology according to claim 1, characterized in that, The adaptive radiation cooling blade (41) is coated with an adaptive radiation cooling coating.

3. The energy-saving adjustable three-mode louver based on adaptive radiative cooling technology according to claim 2, characterized in that, The method for preparing the adaptive radiation cooling coating includes the following steps: Step 1: Weigh out the deionized water, polymer emulsion, and functional additives according to their weight proportions, and stir to disperse them to form a mixed solution; Step 2: Add solar reflective particles, atmospheric window band emission particles, and thermochromic particles to the mixed solution according to the weight proportions, stir and disperse to form a radiation cooling coating. Step 3: Apply the radiation cooling coating to the substrate and cure it to obtain the radiation cooling functional coating.

4. The energy-saving adjustable three-mode louver based on adaptive radiative cooling technology according to claim 3, characterized in that, In steps one and two, the ingredients are: 10-20 parts deionized water, 20-30 parts polymer emulsion, 10-18 parts functional additives, 30-60 parts solar reflective particles, 5-20 parts atmospheric window band emission particles, and 1-5 parts thermochromic particles. The functional additives in step one include the following raw materials in parts by weight: 1-3 parts dispersant, 1-3 parts leveling agent, 0.5-1.5 parts defoamer, 2-3 parts wetting agent, and 3-5 parts film-forming aid.

5. The energy-saving adjustable three-mode louver based on adaptive radiative cooling technology according to claim 4, characterized in that, The polymer emulsion in step two includes acrylic acid, pure acrylic acid, polyurethane, epoxy, acrylic emulsion, silicone PVDF, PMMA, and PDMS; the solar reflective particles in step two include TiO2, BaSO4, CaCO3, and Al2O3; and the atmospheric window band emission particles include SiO2 and ZrO2.

6. The energy-saving adjustable three-mode louver based on adaptive radiative cooling technology according to claim 5, characterized in that, The adaptive radiation cooling coating has a visible light reflectance of not less than 90% at high temperatures and not more than 50% at low temperatures.

7. The energy-saving adjustable three-mode louver based on adaptive radiative cooling technology according to claim 6, characterized in that, The thermochromic nanoparticles are composed of a colorant, a color developer, and a phase change material. The colorant includes crystal violet lactone, the color developer includes bisphenol A, and the phase change material includes long-chain alkyl alcohol phase change materials.

8. The energy-saving adjustable three-mode louver based on adaptive radiative cooling technology according to claim 1, characterized in that, The cylinder (24) is equipped with sealing devices (23) at the sealing connection between the front cover (25) and the rear cover (26).

9. The energy-saving adjustable three-mode louver based on adaptive radiative cooling technology according to claim 1, characterized in that, The large gear (33) and small gear (34) can rotate 180°, and the large gear (33) can drive the connecting rod to rotate 90°.

10. The energy-saving controllable three-mode louver based on adaptive radiative cooling technology according to claim 9, characterized in that, The rotation angle of the large gear (33) is 1:2 with that of the small gear (34).

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