Thermochromic shutter system and control method thereof

Abstract

The invention discloses a thermochromic shutter system and a control method thereof. Comprising outer side glass and inner side glass which are supported by a frame; a shutter array is arranged between the outer side glass and the inner side glass, and the shutter array is connected with the control device; the shutter array is formed by sequentially arranging a plurality of thermochromic plates at intervals; according to the thermochromic shutter system, the optimal inclination angle of the shutter can be judged according to indoor and outdoor temperature conditions, and the magnetic attraction sliding block is pushed through the push rod motor to adjust the shutter to the optimal angle position. Meanwhile, the magnetic attraction sliding block can be manually adjusted, and the inclination angle of the thermochromic shutter can be adjusted within the range from the horizontal direction to the vertical direction according to the preference of a user. Dynamic adjustment of the solar radiation transmittance of the glass system is realized ingeniously through the temperature response characteristic of the optical state of the shutter; and the heat transfer coefficient of the glass system can be regulated and controlled according to needs by combining with shutter inclination angle control.

Description

Technical Field

[0001] The present invention relates to the technical field of building energy conservation, and particularly to a thermochromic louver system and a control method thereof. Background Art

[0002] As an important part of the building envelope structure, the spectral transmittance and heat transfer characteristics of the glass system directly affect the energy-saving effect, indoor thermal comfort and daylighting performance of the building. Research shows that 20%-60% of the building heating and cooling energy consumption is closely related to the optothermal performance parameters of the glass system.

[0003] However, the optothermal performance of traditional glass systems is usually fixed and difficult to dynamically adapt to seasonal climate differences and changes in daily usage requirements. This limitation makes it difficult to reconcile the contradiction between excessive heat loss in winter and excessive heat gain in summer, restricting the further improvement of building energy-saving rate and indoor comfort.

[0004] An ideal glass system should have the ability to synergistically and dynamically adjust optothermal performance parameters such as light transmittance and heat transfer coefficient. In summer, the glass system should have a shading function to minimize solar radiation heat gain. When the outdoor temperature is higher than the indoor temperature, the glass system should reduce the heat transfer coefficient to reduce the outdoor heat entering the room; when the outdoor temperature is lower than the indoor temperature, it should increase the heat transfer coefficient to accelerate the indoor heat dissipation to the outside. In winter, the glass system should remain transparent to maximize solar radiation heat gain. When the outdoor temperature is lower than the indoor temperature, the glass system should reduce the heat transfer coefficient to inhibit indoor heat loss, and when the outdoor temperature is higher than the indoor temperature, it should increase the heat transfer coefficient to promote outdoor heat entering the room.

[0005] Although traditional external shading components (such as louvers and roller blinds) and thermochromic glass can achieve dynamic adjustment of light transmittance, they cannot change the heat transfer coefficient. Placing roller blinds or louvers in the air gap of insulating glass can adjust the heat transfer coefficient by changing the convective heat transfer and radiative heat transfer processes, but this adjustment often comes at the cost of sacrificing the light transmittance adjustment ability.

[0006] It can be seen that the prior art is difficult to achieve the synergistic dynamic adjustment of the light transmittance and heat transfer coefficient of the glass system. Aiming at this problem. Summary of the Invention

[0007] The purpose of the present invention is to overcome the above-mentioned shortcomings and deficiencies of the prior art, and provide a thermochromic louver system and a control method thereof. The present invention realizes the dynamic adjustment of the solar radiation transmittance of the glass system through the temperature response characteristics of the optical state (transparent / translucent / opaque) of the louvers; combined with the control of the louver tilt angle, the on-demand regulation of the heat transfer coefficient of the glass system is realized.

[0008] The present invention is realized through the following technical solutions:

[0009] A thermochromic louver system, comprising an outer glass 7 and an inner glass 8 supported by a frame; a louver array is arranged between the outer glass 7 and the inner glass 8, and the louver array is connected to a control device; the louver array is formed by arranging a plurality of thermochromic plates 1 at intervals in order.

[0010] A metal pull rod 5 is arranged on the inner side of the inner glass 8. Clamps 2 are installed at the edges of each thermochromic plate 1. Rotating shafts 6 are arranged on both sides of the clamps 2, and the rotating shafts 6 are rotatably connected to the frame; each thermochromic plate 1 is connected to one end of a connecting rod 3 through the clamp 2, and the other end of the connecting rod 3 is hinged to the metal pull rod 5 through a hinge joint 4.

[0011] A magnetic attraction slider 11 is arranged on the outer surface of the inner glass 8, and the magnetic attraction slider 11 is coupled to the metal pull rod 5 on the inner side of the inner glass 8 by magnetic force; the control device is used to push the magnetic attraction slider 11 to move up and down; when the magnetic attraction slider 11 moves up and down, the magnetic force is transmitted to the metal pull rod 5, driving the metal pull rod 5 to move up and down synchronously, so that each thermochromic plate 1 rotates synchronously around the rotating shaft 6 to realize angle adjustment.

[0012] The thermochromic plate 1 comprises two transparent heat preservation layers 1-1, a thermochromic layer 1-2 and a transparent low-emissivity layer 1-4; the thermochromic layer 1-2 is sealed between the two transparent heat preservation layers 1-1, and the transparent low-emissivity layer 1-4 is respectively attached to the outer surfaces of the two transparent heat preservation layers 1-1.

[0013] The sealing means that a silicon gasket 1-3 is arranged along the outer edge of the two transparent heat preservation layers 1-1.

[0014] The control device comprises a push rod motor 13, a controller 14, a first temperature sensor 16 and a second temperature sensor 17.

[0015] The push rod of the push rod motor 13 is movably connected to the magnetic attraction slider 11 by a connecting piece 12.

[0016] The first temperature sensor 16 is installed on the outer surface of the outer glass 7, and the second temperature sensor 17 is installed on the outer surface of the inner glass 8.

[0017] The first temperature sensor 16, the second temperature sensor 17 and the push rod motor 13 are respectively connected to the controller 14 through signal lines 15.

[0018] The first temperature sensor 16 and the second temperature sensor 17 respectively transmit the collected outdoor side glass temperature and indoor side glass temperature data to the controller 14.

[0019] The controller 14 is used to send action instructions to the push rod motor 13, which pushes the magnetic attraction slider 11 to move up and down through the push rod motor 13 and drives the metal pull rod 5 to move up and down synchronously, thereby changing the tilt angle of the thermochromic plate 1.

[0020] The frame is sealed around the outer glass 7 and the inner glass 8 to form a sealed insulating glass window.

[0021] The material used for the transparent heat insulation layer 1-1 is polymethyl methacrylate; the material used for the thermochromic layer 1-2 is thermochromic hydrogel.

[0022] The material used for the transparent low-emissivity layer 1-4 is indium tin oxide transparent film with a solar radiation transmittance of 85% and an emissivity of 0.1.

[0023] The angle refers to 0° to 90°, or 0° and 90°.

[0024] The connecting member 12 is a buckle, a snap or a coupling.

[0025] The operation method of the thermochromic louver system of the present invention includes the following steps:

[0026] The first temperature sensor 16 and the second temperature sensor 17 transmit the real-time collected outdoor temperature data t o and indoor temperature data t i to the controller 14 through the signal line 15;

[0027] The controller 14 judges whether t i is ≤ 18°C. If t i ≤ 18°C, it indicates that the indoor is in the heating condition. Then it judges whether t i is ≤ t o . If t i ≤ t o , it indicates that the indoor temperature is lower than the outdoor temperature. At this time, the thermochromic plate 1 should be adjusted to the horizontal state to increase the heat transfer coefficient of the glass system and allow outdoor heat to enter the room. Specifically: the controller 14 sends a retracting push rod action instruction to the push rod motor 13 through the signal line 15, pulls the magnetic attraction slider 11 to move downward, and the magnetic attraction slider 11 drives the metal pull rod 5 to move downward through magnetic force. Thus, the thermochromic plate 1 is pulled to rotate around the rotating shaft 6 to the horizontal state through the connecting rod 3 and the hinge joint 4;

[0028] If t i > t o, indicating that the indoor temperature is higher than the outdoor temperature. At this time, the thermochromic plate 1 should be adjusted to a vertical state to reduce the heat transfer coefficient of the glass system and prevent indoor heat from flowing to the outdoor. Specifically: The controller 14 sends an action instruction to the push rod motor 13 through the signal line 15, pushing the magnetic attraction slider 11 to move upward. The magnetic attraction slider 11 drives the metal pull rod 5 to move upward through magnetic force, and thus drives the thermochromic plate 1 to rotate around the rotation shaft 6 to the vertical state through the connecting rod 3 and the hinge joint 4;

[0029] If 18°C < t i ≤ 26°C, it indicates that it is in the spring or autumn working condition at this time, and the indoor temperature is relatively comfortable, and the tilt angle of the thermochromic plate 1 does not need to be adjusted;

[0030] If t i ≥ 26°C, it indicates that the indoor is in the cooling working condition. Then judge whether t i ≤ t o , if t i ≤ t o , indicating that the indoor temperature is lower than the outdoor temperature. At this time, the thermochromic plate 1 should be adjusted to a vertical state to reduce the heat transfer coefficient of the glass system and prevent outdoor heat from entering the indoor. Specifically: The controller 14 sends an upward push rod action instruction to the push rod motor 13 through the signal line 15, pushing the magnetic attraction slider 11 to move upward. The magnetic attraction slider 11 drives the metal pull rod 5 to move upward through magnetic force, and thus drives the thermochromic plate 1 to rotate around the rotation shaft 6 to the vertical state through the connecting rod 3 and the hinge joint 4;

[0031] If t i > t o , indicating that the indoor temperature is higher than the outdoor temperature. At this time, the thermochromic plate 1 should be adjusted to a horizontal state to increase the heat transfer coefficient of the glass system and promote the dissipation of indoor heat to the outdoor. Specifically: The controller 14 sends a retract push rod action instruction to the push rod motor 13 through the signal line 15, pulling the magnetic attraction slider 11 to move downward. The magnetic attraction slider 11 drives the metal pull rod 5 to move downward through magnetic force, and thus drives the thermochromic plate 1 to rotate around the rotation shaft 6 to the horizontal state through the connecting rod 3 and the hinge joint 4.

[0032] The present invention has the following advantages and effects compared with the prior art:

[0033] The thermochromic louver is a "sandwich" sandwich structure, and the thermochromic material is the core functional layer of the louver. Two pieces of transparent heat-insulating materials are used to clamp the thermochromic material to form the thermochromic louver. The outer surface of the louver is treated with ultraviolet modification to enhance the surface activity, and a transparent low-emissivity film is attached to its surface through a precision bonding process, and finally a louver component with both high thermal resistance, low emissivity and thermochromic characteristics is prepared.

[0034] In the present invention, a clamp is used to fix the thermochromic plate to the connecting piece, and the connecting rod is linked with the pull rod through a hinge joint. The up-and-down movement of the pull rod can drive the connecting rod to drive the thermochromic plate to rotate around the rotating shaft, so as to realize the continuous adjustment of the louver inclination angle.

[0035] The entire mechanical structure of the present invention is encapsulated between the outdoor-side glass and the indoor-side glass. The top and bottom of the two pieces of glass are sealed with a top plate and a bottom plate respectively to form a closed structure. A magnetic attraction slider is arranged on the inner surface of the indoor-side glass, and the magnetic attraction slider is connected to the push rod motor through a lock. After the lock or buckle is unlocked, the magnetic attraction slider disconnects from the push rod motor, and the sliding mode of the magnetic attraction slider can be switched to the manual sliding mode. After the lock or buckle is locked, the magnetic attraction slider is connected to the push rod motor, and the sliding mode of the magnetic attraction slider is switched to the intelligent sliding mode.

[0036] A controller is arranged indoors in the present invention and is connected to the first temperature sensor, the second temperature sensor, and the push rod motor through signal lines. After collecting the temperature data of the outdoor-side glass and the indoor-side glass, it is transmitted to the controller. Through the controller, the inclination angle of the thermochromic plate is determined, and then an action instruction is sent to the push rod motor to adjust the thermochromic louver to rotate to the horizontal (0°) or vertical (90°) position through the push rod motor.

[0037] In the thermochromic louver system of the present invention, it changes from a transparent state to an opaque state at high temperatures and from an opaque state to a transparent state at low temperatures, so as to realize the adaptive adjustment of the solar radiation transmittance of the glass system. The above optical state transition process is reversible and is realized by the characteristics of the thermochromic hydrogel itself without consuming additional energy.

[0038] For the control of the inclination angle of the thermochromic plate in the thermochromic louver system of the present invention, the controller can judge the optimal inclination angle of the thermochromic plate according to the indoor and outdoor temperature conditions, and push the magnetic attraction slider through the push rod motor to adjust the thermochromic plate to the optimal angle position.

[0039] In winter, the thermochromic louver system of the present invention maintains a transparent state to maximize the solar radiation heat gain. At the same time, when the outdoor temperature is higher than the indoor temperature, the heat transfer coefficient of the glass system is increased to promote the entry of outdoor heat into the room. When the outdoor temperature is lower than the indoor temperature, the heat transfer coefficient is reduced to inhibit the loss of indoor heat;

[0040] In summer, the thermochromic louver system maintains a sunshade state to minimize the solar radiation heat gain. At the same time, when the outdoor temperature is higher than the indoor temperature, the heat transfer coefficient of the glass system is reduced to reduce the entry of outdoor heat into the room. When the outdoor temperature is lower than the indoor temperature, the heat transfer coefficient is increased to accelerate the dissipation of indoor heat to the outside. Description of the Drawings

[0041] Figure 1This is a schematic structural diagram of the thermochromic louver system of the present invention.

[0042] Figure 2 This is a schematic structural diagram of the thermochromic plate of the present invention.

[0043] Figure 3 This is a control flow chart of the thermochromic louver system of the present invention.

[0044] Reference numerals in the figure: thermochromic plate 1, transparent thermal insulation layer 1-1, thermochromic layer 1-2, silicon washer 1-3, transparent low emissivity layer 1-4, fixture 2, connecting rod 3, hinge joint 4, pull rod 5, rotating shaft 6, outer glass 7, inner glass 8, top plate 9, bottom plate 10, magnetic attraction slider 11, connecting member 12, push rod motor 13, controller 14, signal line 15, first temperature sensor 16, second temperature sensor 17. Detailed implementation manners

[0045] The present invention will be further described in detail below in conjunction with specific embodiments.

[0046] As Figure 1-2 shown. The present invention discloses a thermochromic louver system, including an outer glass 7 and an inner glass 8 supported by a frame; a louver array is arranged between the outer glass 7 and the inner glass 8, and the louver array is connected to a control device; the louver array is formed by arranging a plurality of thermochromic plates 1 at intervals in order;

[0047] The phase transition temperature of the thermochromic plate 1 is 28°C to 32°C to meet the application requirements in different climate zones. When the temperature of the thermochromic plate 1 is lower than the phase transition temperature, the thermochromic plate 1 is in a transparent state, and the solar radiation transmittance is 0.8. When the temperature of the thermochromic plate 1 exceeds the phase transition temperature, the thermochromic plate 1 gradually becomes opaque, and in the opaque state, the solar radiation transmittance is 0.2.

[0048] A metal pull rod 5 is arranged on the inner side of the inner glass 8. Fixtures 2 are installed at the edges of each thermochromic plate 1. Rotating shafts 6 are arranged on both sides of the fixtures 2, and the rotating shafts 6 are rotatably connected to the frame; each thermochromic plate 1 is connected to one end of a connecting rod 3 through a fixture 2, and the other end of the connecting rod 3 is hinged to the metal pull rod 5 through a hinge joint 4;

[0049] A magnetic attraction slider 11 is arranged on the outer side of the inner glass 8, and the magnetic attraction slider 11 is coupled to the metal pull rod 5 on the inner side of the inner glass 8 through magnetic force; the control device is used to push the magnetic attraction slider 11 to move up and down; when the magnetic attraction slider 11 moves up and down, the magnetic force is transmitted to the metal pull rod 5, driving the metal pull rod 5 to move up and down synchronously, so that each thermochromic plate 1 rotates synchronously around the rotating shaft 6 to achieve angle adjustment.

[0050] The thermochromic panel 1 includes two transparent thermal insulation layers 1-1, a thermochromic layer 1-2, and a transparent low-emissivity layer 1-4; the thermochromic layer 1-2 is sealed between the two transparent thermal insulation layers 1-1, and the transparent low-emissivity layer 1-4 is respectively applied to the outer surfaces of the two transparent thermal insulation layers 1-1.

[0051] The thermochromic layer 1-2 has the ability of reversible transition between transparent and opaque optical states. When the temperature is higher than the phase transition temperature of the thermochromic material, the material becomes opaque. When the temperature is lower than the phase transition temperature of the thermochromic material, the material becomes transparent. By utilizing the reversible transition characteristic of the optical state of the thermochromic material, the thermochromic louvers are in an opaque state during the high-temperature period in summer, reducing the solar radiation heat entering the room through the glass system and reducing the cooling energy consumption. During the low-temperature period in winter, the thermochromic louvers remain transparent, increasing the solar heat gain of the room and reducing the heating energy consumption.

[0052] Thermochromic hydrogel can be selected as the thermochromic layer 1-2. The thermochromic hydrogel is prepared by a one-pot method: successively add the phase change component hydroxypropyl methylcellulose (HPMC), the component sodium chloride (NaCl) for adjusting the phase transition temperature, the monomer acrylamide (AM), and the cross-linking agent (N,N′-methylenebisacrylamide) BIS aqueous solution into deionized water, and stir evenly. Then, introduce argon for 10 min to remove oxygen, and finally add the initiator potassium persulfate (KPS) aqueous solution and stir for 2 min to obtain a transparent and homogeneous prepolymer solution.

[0053] The transparent thermal insulation layer 1-1 is used to encapsulate the thermochromic layer 1-2. Poly(methyl methacrylate) (PMMA) is selected to encapsulate the thermochromic layer 1-2. PMMA has excellent optical properties (solar radiation transmittance > 90%) and thermal insulation properties (thermal conductivity 0.15 W / m·K). The size is 1000 mm (length) × 15 mm (width) × 1 mm (thickness). The poly(methyl methacrylate) (PMMA) prepolymer solution is injected into the cavities of two PMMA molds sandwiching the silicon gasket 3 through a peristaltic pump, and then thermally initiated polymerization is carried out at 60 °C for more than 3 h to prepare the thermochromic panel 1. The phase transition temperature of the thermochromic panel 1 is 28 °C - 32 °C to meet the application requirements in different climate zones. When the temperature is lower than the phase transition temperature, the thermochromic panel 1 is in a transparent state with a solar radiation transmittance of 0.8. When the temperature exceeds the phase transition temperature, the thermochromic panel 1 gradually becomes opaque, and in the opaque state, the solar radiation transmittance is 0.2.

[0054] The outer surface of the thermochromic plate 1 is treated with ultraviolet rays to enhance its surface activity, and a transparent low-emissivity film is attached to its surface through a precision bonding process to reduce the surface emissivity of the louver. Between the transparent low-emissivity layers 1-4, an indium tin oxide (ITO) transparent film is preferably used. The solar radiation transmittance of the ITO film is 85%, and the emissivity is 0.1.

[0055] The sealing means that a silicon gasket 1-3 is arranged along the outer edge of the two transparent heat-insulating layers 1-1. The silicon gasket 1-3 prevents the leakage of the material of the thermochromic layer 1-2.

[0056] The control device includes a push rod motor 13, a controller 14, a first temperature sensor 16 and a second temperature sensor 17;

[0057] The push rod of the push rod motor 13 is movably connected to the magnetic attraction slider 11 by a connecting member 12;

[0058] The first temperature sensor 16 is installed on the outside of the outer glass 7, and the second temperature sensor 17 is installed on the outside of the inner glass 8;

[0059] The first temperature sensor 16, the second temperature sensor 17 and the push rod motor 13 are respectively connected to the controller 14 through signal lines 15;

[0060] The first temperature sensor 16 and the second temperature sensor 17 respectively transmit the collected outdoor side glass temperature and indoor side glass temperature data to the controller 14;

[0061] The controller 14 is used to send an action instruction to the push rod motor 13, and the push rod motor 13 pushes the magnetic attraction slider 11 to move up and down and drives the metal pull rod 5 to move up and down synchronously, thereby changing the tilt angle of the thermochromic plate 1.

[0062] The frame is sealed around the outer glass 7 and the inner glass 8 to form a sealed insulating glass window.

[0063] The plate material used for the transparent heat-insulating layer 1-1 is polymethyl methacrylate; the material used for the thermochromic layer 1-2 is a thermochromic hydrogel.

[0064] The material used for the transparent low-emissivity layer 1-4 is an indium tin oxide transparent film with a solar radiation transmittance of 85% and an emissivity of 0.1.

[0065] The angle refers to 0° to 90°, or 0° and 90°.

[0066] The connecting member 12 is a detachable movable connecting part such as a lock, a buckle or a coupling, etc., and can be specifically determined according to the actual application.

[0067] The phase transition temperature of the thermochromic panel 1 of the present invention is 28°C. When the solar radiation is strong and the temperature is high in summer, the temperature of the thermochromic panel 1 exceeds the transition temperature of 28°C, and the thermochromic panel 1 turns into an opaque state, with a solar radiation transmittance of 0.2, which can significantly reduce the solar radiation heat entering the room through the glass system, thereby reducing the air-conditioning cooling energy consumption and increasing the thermal comfort of the indoor occupants.

[0068] During the cold period in winter, the temperature of the thermochromic panel 1 is lower than the transition temperature of 28°C, and the thermochromic panel 1 remains in a transparent state, with a solar radiation transmittance of 0.8, allowing the solar radiation to enter the room through the glass system, which helps to reduce the indoor heating energy consumption and increase the thermal comfort of the indoor occupants. The adjustment of the transparent / opaque state of the thermochromic panel 1 is the inherent property of the thermochromic material 1-2 without consuming additional energy, having an adaptive adjustment characteristic.

[0069] The adjustment of the tilt angle of the thermochromic panel 1 includes manual and electric control (intelligent) adjustment modes.

[0070] The manual adjustment mode is as follows:

[0071] After unlocking the lock, the connection between the magnetic attraction slider 11 and the push rod motor 13 will be disconnected. The magnetic attraction slider 11 is magnetically adsorbed on the indoor side glass 8 through the magnetic force between it and the pull rod 5. The magnetic attraction slider 11 is manually slid up and down. When moving upward, the magnetic attraction slider 11 drives the pull rod 5 to move upward through the magnetic force, and thus drives the thermochromic panel 1 to rotate around the rotating shaft 6 to the vertical state through the connecting rod 3 and the hinge joint 4. When moving downward, the magnetic attraction slider 11 drives the pull rod 5 to move downward through the magnetic force, and thus drives the thermochromic panel 1 to rotate around the rotating shaft 6 to the horizontal state through the connecting member 3 and the hinge joint 4. During the upward or downward movement process, the tilt angle of the thermochromic panel 1 can be adjusted between the horizontal and vertical angles.

[0072] The intelligent adjustment mode is as follows:

[0073] S1, The first temperature sensor 16 and the second temperature sensor 17 transmit the real-time collected outdoor temperature data t o and indoor temperature data t i to the controller 14 through the signal line 15;

[0074] S2, Judge whether t i ≤t o If t i ≤t o, indicating that the indoor temperature is lower than the outdoor temperature. At this time, the thermochromic panel 1 should be adjusted to a horizontal state to increase the heat transfer coefficient of the glass system and allow outdoor heat to enter the room. Specifically: The controller 14 sends a command to retract the push rod to the push rod motor 13 through the signal line 15, pulling the magnetic attraction slider 11 downward. The magnetic attraction slider 11 drives the metal pull rod 5 downward through magnetic force, and thus pulls the thermochromic panel 1 to rotate around the rotation shaft 6 to the horizontal state through the connecting rod 3 and the hinge joint 4;

[0075] S3, if t i >t o , indicating that the indoor temperature is higher than the outdoor temperature. At this time, the thermochromic panel 1 should be adjusted to a vertical state to reduce the heat transfer coefficient of the glass system and prevent indoor heat from flowing to the outside. Specifically: The controller 14 sends an action command to the push rod motor 13 through the signal line 15, pushing the magnetic attraction slider 11 upward. The magnetic attraction slider 11 drives the metal pull rod 5 upward through magnetic force, and thus pushes the thermochromic panel 1 to rotate around the rotation shaft 6 to the vertical state through the connecting rod 3 and the hinge joint 4;

[0076] S4, if 18°C < t i ≤26°C, it indicates that it is in the spring or autumn working condition at this time, and the indoor temperature is relatively comfortable, and the tilt angle of the thermochromic panel 1 does not need to be adjusted;

[0077] S5, if t i ≥26°C, it indicates that the room is in the cooling working condition. Then judge whether t i ≤t o If t i ≤t o , indicating that the indoor temperature is lower than the outdoor temperature. At this time, the thermochromic panel 1 should be adjusted to a vertical state to reduce the heat transfer coefficient of the glass system and prevent outdoor heat from entering the room. Specifically: The controller 14 sends a command to push the push rod upward to the push rod motor 13 through the signal line 15, pushing the magnetic attraction slider 11 upward. The magnetic attraction slider 11 drives the metal pull rod 5 upward through magnetic force, and thus pushes the thermochromic panel 1 to rotate around the rotation shaft 6 to the vertical state through the connecting rod 3 and the hinge joint 4;

[0078] S6, if t i >t o , indicating that the indoor temperature is higher than the outdoor temperature. At this time, the thermochromic panel 1 should be adjusted to a horizontal state to increase the heat transfer coefficient of the glass system and promote the dissipation of indoor heat to the outside. Specifically: The controller 14 sends a command to retract the push rod to the push rod motor 13 through the signal line 15, pulling the magnetic attraction slider 11 downward. The magnetic attraction slider 11 drives the metal pull rod 5 downward through magnetic force, and thus pulls the thermochromic panel 1 to rotate around the rotation shaft 6 to the horizontal state through the connecting rod 3 and the hinge joint 4.

[0079] As described above, the present invention can be preferably realized.

[0080] The implementation manners of the present invention are not limited by the above embodiments. Any other changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present invention shall be equivalent replacement manners and are all included in the protection scope of the present invention.

Claims

1. A thermochromic louver system, comprising an outer glass (7) and an inner glass (8) supported by a frame; a louver array is disposed between the outer glass (7) and the inner glass (8), and the louver array is connected to a control device; characterized in that, The louver array is formed by arranging multiple thermochromic plates (1) at intervals in an orderly manner; A metal pull rod (5) is arranged on the inner side of the inner glass (8). Clamps (2) are installed at the edges of each thermochromic plate (1). Rotating shafts (6) are arranged on both sides of the clamps (2), and the rotating shafts (6) are rotatably connected to the frame; each thermochromic plate (1) is connected to one end of a connecting rod (3) through a clamp (2), and the other end of the connecting rod (3) is hinged to the metal pull rod (5) through a hinge joint (4); A magnetic attraction slider (11) is arranged on the outer side of the inner glass (8), and the magnetic attraction slider (11) is coupled to the metal pull rod (5) on the inner side of the inner glass (8) by magnetic force; the control device is used to push the magnetic attraction slider (11) to move up and down; when the magnetic attraction slider (11) moves up and down, the magnetic force is transmitted to the metal pull rod (5), driving the metal pull rod (5) to move up and down synchronously, so that each thermochromic plate (1) rotates synchronously around the rotating shaft (6) to achieve angle adjustment.

2. The thermochromic louver system according to claim 1, wherein The thermochromic plate (1) includes two transparent heat-insulating layers (1-1), a thermochromic layer (1-2), and a transparent low-emissivity layer (1-4); the thermochromic layer (1-2) is sealed between the two transparent heat-insulating layers (1-1), and the transparent low-emissivity layer (1-4) is respectively attached to the outer surfaces of the two transparent heat-insulating layers (1-1).

3. The thermochromic louver system according to claim 2, wherein The sealing means that a silicon gasket (1-3) is arranged along the outer edges of the two transparent heat-insulating layers (1-1).

4. The thermochromic louver system according to claim 1, wherein The control device includes a push rod motor (13), a controller (14), a first temperature sensor (16), and a second temperature sensor (17); The push rod of the push rod motor (13) is movably connected to the magnetic attraction slider (11) by a connecting member (12); The first temperature sensor (16) is installed on the outer side of the outer glass (7), and the second temperature sensor (17) is installed on the outer side of the inner glass (8); The first temperature sensor (16), the second temperature sensor (17), and the push rod motor (13) are respectively connected to the controller (14) through signal lines (15); The first temperature sensor (16) and the second temperature sensor (17) respectively transmit the collected outdoor side glass temperature and indoor side glass temperature data to the controller (14); The controller (14) is used to send an action instruction to the push rod motor (13), push the magnetic attraction slider (11) to move up and down through the push rod motor (13), and drive the metal pull rod (5) to move up and down synchronously, thereby changing the inclination angle of the thermochromic plate (1).

5. The thermochromic louver system according to claim 1, wherein The frame is sealed around the outer glass (7) and the inner glass (8) to form a sealed insulating glass window.

6. The thermochromic louver system according to claim 1, wherein The material used for the thermochromic layer (1-2) is thermochromic hydrogel; the material used for the transparent heat-insulating layer (1-1) is polymethyl methacrylate.

7. The thermochromic louver system according to claim 1, wherein The material used for the transparent low-emissivity layer (1-4) is indium tin oxide transparent film with a solar radiation transmittance of 85% and an emissivity of 0.

1.

8. The thermochromic louver system according to claim 1, characterized in that, The angle refers to 0° to 90°.

9. The thermochromic louver system according to claim 4, characterized in that, The connecting member (12) is a buckle, a snap fastener, or a coupling.

10. A method for operating the thermochromic louver system according to any one of claims 1 to 9, characterized in that It includes the following steps: The first temperature sensor (16) and the second temperature sensor (17) transmit the outdoor temperature data t o and the indoor temperature data t i collected in real time to the controller (14) via the signal line (15); The controller (14) determines t i whether it is ≤ 18°C. If t i ≤ 18°C, it indicates that the room is in the heating condition. Then it further determines whether t i is ≤ t o . If t i ≤ t o , it indicates that the indoor temperature is lower than the outdoor temperature. At this time, the thermochromic panel (1) should be adjusted to the horizontal state to increase the heat transfer coefficient of the glass system and allow outdoor heat to enter the room. Specifically: The controller (14) sends a command to retract the push rod to the push rod motor (13) through the signal line (15), pulling the magnetic attraction slider (11) to move downward. The magnetic attraction slider (11) drives the metal pull rod (5) to move downward through magnetic force. Thus, the thermochromic panel (1) is pulled to rotate around the rotation axis (6) to the horizontal state through the connecting rod (3) and the hinge joint (4); If t i >t o , it indicates that the indoor temperature is higher than the outdoor temperature. At this time, the thermochromic panel (1) should be adjusted to a vertical state to reduce the heat transfer coefficient of the glass system and prevent indoor heat from flowing to the outside. Specifically: the controller (14) sends an action instruction to the push rod motor (13) through the signal line (15), pushing the magnetic attraction slider (11) to move upward. The magnetic attraction slider (11) drives the metal pull rod (5) to move upward through magnetic force, and thus pushes the thermochromic panel (1) to rotate around the rotation shaft (6) to a vertical state through the connecting rod (3) and the hinge joint (4); If 18°C < t i ≤ 26°C, it indicates that it is in spring or autumn working condition at this time, the indoor temperature is relatively comfortable, and the tilt angle of the thermochromic plate (1) does not need to be adjusted; If t i ≥ 26 °C, it indicates that the indoor is in the refrigeration condition. Then judge whether t i is ≤ t o . If t i ≤ t o , it indicates that the indoor temperature is lower than the outdoor temperature. At this time, the thermochromic plate (1) should be adjusted to the vertical state to reduce the heat transfer coefficient of the glass system and prevent outdoor heat from entering the room. Specifically: the controller (14) sends an upward push rod action instruction to the push rod motor (13) through the signal line (15), pushing the magnetic attraction slider (11) to move upward. The magnetic attraction slider (11) drives the metal pull rod (5) to move upward through magnetic force, and thus pushes the thermochromic plate (1) to rotate around the rotating shaft (6) to the vertical state through the connecting rod (3) and the hinge joint (4); If t i >t o , it indicates that the indoor temperature is higher than the outdoor temperature. At this time, the thermochromic panel (1) should be adjusted to a horizontal state to increase the heat transfer coefficient of the glass system and promote the dissipation of indoor heat to the outside. Specifically: The controller (14) sends a command to retract the push rod to the push rod motor (13) through the signal line (15), pulling the magnetic attraction slider (11) to move downward. The magnetic attraction slider (11) drives the metal pull rod (5) to move downward through magnetic force, thereby pulling the thermochromic plate (1) to rotate around the rotation axis (6) to the horizontal state through the connecting rod (3) and the hinge joint (4).

Images