CN108302811B - Tunable optical solar energy heating glass curtain wall and its light-dimming method - Google Patents

Abstract

The invention discloses a light-adjustable solar heat-collecting glass curtain wall and a light-adjusting method thereof, and relates to the technical field of glass curtain walls. The light-adjustable solar heat-collecting glass curtain wall includes a frame, a sun-facing glass and a sun-back glass arranged on the frame, A solar heat collector is arranged between the sunny glass and the back glass, and the heat collecting tubes with the solar heat collector are connected with a compound parabolic concentrator, and the termination point of the involute part of the compound parabolic concentrator is a compound parabolic concentrator. The apex of the parabolic portion of the concentrator; the compound parabolic concentrator is connected with an angle control device that controls the rotation of the compound parabolic concentrator with the heat collecting tube as the rotation axis. The invention introduces the composite parabolic concentrator into the glass curtain wall, which not only plays the role of sunshade but also plays the role of concentrating light, and realizes the balanced adjustment of lighting and heat collection of the glass curtain wall by adjusting the rotation angle of the composite parabolic concentrator, which improves the Solar energy utilization and heat collection efficiency.

Description

Dimmable solar heat collecting glass curtain wall and dimming method thereof

technical field

The invention relates to the technical field of glass curtain walls, in particular to a light-adjustable solar heat-collecting glass curtain wall and a light-adjusting method thereof.

Background technique

In recent years, with the continuous development of my country's economy and society and the continuous improvement of people's living standards, solar water heaters have gradually become household and sanitary products commonly used in people's daily life. Traditional solar water heaters are placed on the roof or hung on the wall to collect solar radiation heat energy. With the increase of urban population and the number of high-rise buildings, the installation space of traditional solar water heaters is limited, which brings inconvenience to people's lives.

The glass curtain wall is the outer wall enclosure of the building, also known as the hanging wall, which is not load-bearing. It is a light-weight wall with decorative effect commonly used in large or high-rise buildings. The adoption of a large number of glass curtain walls not only makes the overall appearance of the building more beautiful, but also increases the heat load of the indoor air conditioner. In order to solve this problem, sun-shading devices have to be installed on the outer surface of the glass curtain wall building, and at the same time, it also affects the aesthetics of the building.

In order to solve the problem of reducing the installation space of traditional solar water heaters, there has been a design for the integrated installation of solar collectors and glass curtain walls. The problem of insufficient space, however, after installing heat-absorbing pipes inside the glass curtain wall, it will affect the lighting area of the glass curtain wall, thereby affecting indoor lighting. CN202416648U proposes to smear selective absorption coating inside the glass curtain wall, which can collect heat and can also be used as indoor sunshade. Although it meets the indoor lighting requirements, it cannot be adjusted and dynamically balanced according to the indoor lighting and solar heat collection efficiency. When the outdoor light is insufficient, due to the installation of solar heat collectors, the indoor light will be insufficient, and lighting devices must be used, resulting in waste of energy. Moreover, due to insufficient outdoor light, the efficiency and temperature of solar heat collection are very low, which cannot meet the needs of utilization. , resulting in a waste of energy.

Contents of the invention

The purpose of the present invention is to provide a dimmable solar heat collecting glass curtain wall that can collect heat and shade the sun, and can adjust indoor lighting in real time, realize the dynamic balance between heat collection and lighting, and improve the utilization rate of solar energy and heat collection efficiency , to solve the technical problem that the existing integrated solar glass curtain wall described in the above background technology cannot realize the real-time adjustment of indoor lighting and the dynamic balance of lighting and heat collection.

In order to achieve the above object, the present invention has taken the following technical solutions:

A kind of dimmable solar heat-collecting glass curtain wall, comprising a frame, a sun-facing glass and a sun-back glass arranged on the frame, a solar heat collector is arranged between the sun-facing glass and the sun-back glass, and the solar The heat collector includes a vertical liquid outlet pipe and a liquid inlet pipe. There are several horizontally arranged heat collector pipes connected between the liquid outlet pipe and the liquid inlet pipe. Each of the heat collector pipes is rotatably connected with a composite Parabolic concentrator, the termination point of the involute part of the compound parabolic concentrator is the apex of the parabolic part of the compound parabolic concentrator; the compound parabolic concentrator is connected with a An angle control device for rotating the heat collecting tube as a rotating shaft;

The angle control device includes an indoor light intensity sensor, a PLC controller, a servo motor, an angle sensor, and an outdoor light intensity sensor. The angle sensor is arranged on the compound parabolic concentrator. The indoor light intensity sensor, the Both the outdoor light intensity sensor and the angle sensor are connected to the input end of the PLC controller, the output end of the PLC controller is connected to the servo motor, and the servo motor is connected to the compound parabolic concentrator through transmission.

Further, the compound parabolic concentrator includes a substrate integrally made of plastic or metal material, both sides of the substrate are provided with reflective layers; the spread angle of the involute portion is 180°; the parabolic portion The angle between the vertex and the end point of the parabolic part and the straight line formed by the center of the heat collection tube is 100°; The ratio is 15.

Further, the opening direction of the compound parabolic concentrator is towards one side of the sun-facing glass; the rotatable angle range of the compound parabolic concentrator is within the range of 0° to 60° on one side of the sun-facing glass, When the starting point of the involute part and the end point of the involute part are on the same horizontal plane, the rotation angle of the compound parabolic concentrator is 0°, and the parabolic part is adjacent to the above The described involute portion of the compound parabolic concentrator is tangent, and the angle between the line and the horizontal line between the tangent point and the center of the base circle of the described involute portion of the above adjacent compound parabolic concentrator is 69°.

Further, the servo motor is arranged on the inner top of the frame, and the rotating shaft of the servo motor is provided with a runner, and the runner is provided with a deck, and the deck is rotatable through a buckle. A joint-type flexible connecting rod is connected, and the bottom end of the joint-type flexible connecting rod is rotatably buckled by a buckle 2 to a buckle 2 provided on the first compound parabolic concentrator at the top of the glass curtain wall. Inside; the two ends of the compound parabolic concentrator are connected by connecting rods, the left and right end faces of the compound parabolic concentrator are provided with clamping holes, and the connecting rod is provided with the clamping holes The corresponding clamping column is rotatably clamped in the clamping hole.

Further, the clamping seat 2 is located on the upper part of the parabolic part of the first compound parabolic concentrator, and the clamping hole is located on the upper part of both ends of the parabolic part of the compound parabolic concentrator.

Further, the heat collecting tube is made of metal material, the thickness of the heat collecting tube is 0.3-1.5 mm, and the outer diameter of the heat collecting tube is not more than 5 mm.

The present invention also relates to a dimming method for a dimmable solar heat-collecting glass curtain wall. The above-mentioned angle control device is used to control the rotation angle of the compound parabolic concentrator through the lighting priority mode or the heat collection priority mode.

Further, when the dimmable solar heat-collecting glass curtain wall is in the daylighting priority mode, the indoor light intensity sensor collects the indoor light intensity signal, and sends the indoor light intensity signal to the PLC controller, and the PLC controller determines the indoor light intensity signal. Whether the light intensity signal is within the preset optimal data range of indoor light intensity, if the indoor light intensity signal is not within the optimal data range of indoor light intensity, the PLC controller sends a control signal to control the servo motor to make a corresponding The rotation angle of the compound parabolic concentrator is adjusted to change the indoor light intensity, so that the indoor light intensity signal enters the optimal data range of the indoor light intensity.

Further, when the dimmable solar heat collection glass curtain wall is in the heat collection priority mode, the angle sensor detects the rotation angle of the compound parabolic concentrator, and sends the rotation angle signal to the PLC controller, and the The PLC controller judges whether the rotation angle is within the preset optimal heat collection angle range, and if the rotation angle signal is not within the optimal rotation angle range, the PLC controller sends a control signal to control the servo motor to make a corresponding Rotate to adjust the rotation angle of the compound parabolic concentrator, so that the rotation angle of the compound parabolic concentrator enters the optimum heat collection angle range.

Beneficial effects of the present invention: lighting and solar energy collection and lighting can be dynamically allocated according to the intensity of indoor and outdoor light. When the outdoor light is strong, the light intensity irradiated indoors can be reduced, so that more solar radiation can be absorbed by the solar heat collector; When the outdoor light is weak, by changing the rotation angle of the compound parabolic concentrator, more sunlight can be reflected into the room, the indoor light intensity can be increased, and the proportion of solar heat utilization can be reduced. The concentrating effect of the concentrator can still achieve a certain heat collection efficiency and heat collection temperature, which improves the solar energy utilization rate and heat collection efficiency.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and will become apparent from the description, or may be learned by practice of the invention.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For Those of ordinary skill in the art can also obtain other drawings based on these drawings without making creative efforts.

Fig. 1 is a front structural view of a dimmable solar heat collecting glass curtain wall according to an embodiment of the present invention.

Fig. 2 is a cross-sectional view taken along line A of Fig. 1 .

Fig. 3 is a schematic diagram of the state when the compound parabolic concentrator according to the embodiment of the present invention is completely closed.

Fig. 4 is a schematic diagram of the connection state between the runner and the first compound parabolic concentrator according to the embodiment of the present invention.

Fig. 5 is a schematic structural diagram of the connecting rod according to the embodiment of the present invention.

Fig. 6 is a schematic structural diagram of a compound parabolic concentrator according to an embodiment of the present invention.

Fig. 7 is a frame diagram of an angle control device for a dimmable solar heat collecting glass curtain wall according to an embodiment of the present invention.

Fig. 8 is a block diagram of the control principle of the automatic dimming mode of the dimmable solar heat collecting glass curtain wall according to the embodiment of the present invention.

Among them: 1- frame; 2- sunny glass; 3- back glass; 4- liquid outlet pipe; 5- liquid inlet pipe; 6- heat collection pipe; 7- compound parabolic concentrator; 701-involute part; 702-parabolic part; 703-card hole; 8-angle control device; 801-indoor light sensor; 802-PLC controller; 803-servo motor; 804-runner; 805- Holder 1; 806-bucket 1; 807-joint type flexible connecting rod; 808-bucket 2; 809-deck 2; 810-connecting rod; sensor.

Detailed ways

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

Those skilled in the art will understand that the singular forms "a", "an", "the" and the used herein may also include the plural forms unless otherwise stated. It should be further understood that the word "comprising" used in the description of the present invention refers to the presence of said features, integers, steps, operations, elements and/or components, but does not exclude the presence or addition of one or more other features, Integers, steps, operations, elements and/or groups thereof. It should be understood that "connected" or "coupled" as used herein may include wireless connection or coupling, and the term "and/or" used herein includes any and all combinations of one or more associated listed items.

Those skilled in the art can understand that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It should also be understood that terms such as those defined in commonly used dictionaries should be understood to have a meaning consistent with the meaning in the context of the prior art, and will not be interpreted in an idealized or overly formal sense unless defined as herein explain.

In order to facilitate the understanding of the present invention, the present invention will be further explained below with specific embodiments in conjunction with the accompanying drawings, and the specific embodiments are not intended to limit the embodiments of the present invention.

Fig. 1 is a front structural view of a dimmable solar heat-collecting glass curtain wall according to an embodiment of the present invention, Fig. 2 is a cross-sectional structural view of a dimmable solar heat-collecting glass curtain wall according to an embodiment of the present invention, Fig. 3 It is a schematic diagram of the state when the compound parabolic concentrator described in the embodiment of the present invention is completely closed, and FIG. 4 is a schematic diagram of the connection state between the runner and the first compound parabolic concentrator described in the embodiment of the present invention. FIG. Schematic diagram of the structure of the connecting rod described in the embodiment of the invention, Figure 6 is a schematic diagram of the structure of the compound parabolic concentrator described in the embodiment of the invention, Figure 7 is a schematic diagram of the adjustable solar heat collecting glass curtain wall described in the embodiment of the invention The frame diagram of the angle control device, Fig. 8 is a block diagram of the control principle of the automatic dimming mode of the dimmable solar heat collecting glass curtain wall according to the embodiment of the present invention. Those skilled in the art should understand that the drawings are only schematic diagrams of the embodiments, and the components or processes in the drawings are not necessarily necessary for implementing the present invention.

As shown in Figures 1 to 7, the embodiment of the present invention provides a dimmable solar thermal collector glass curtain wall, including a frame 1, a sun-facing glass 2 and a sun-back glass 3 arranged on the frame 1, the sun-facing glass A solar heat collector is arranged between the glass 2 and the back glass 3, and the solar heat collector includes a vertically arranged liquid outlet pipe 4 and a liquid inlet pipe 5, and the liquid outlet pipe 4 and the liquid inlet pipe There are several horizontally arranged heat collecting tubes 6 connected between the tubes 5, each of the heat collecting tubes 6 is rotatably connected with a compound parabolic concentrator 7, and the termination point of the involute portion 701 of the compound parabolic concentrator 7 It is the vertex of the parabolic portion 702 of the compound parabolic concentrator 7; the compound parabolic concentrator 7 is connected with an angle control device that controls the compound parabolic concentrator 7 to rotate with the heat collecting tube 6 as the axis of rotation 8;

The angle control device 8 includes an indoor light intensity sensor 801, a PLC controller 802, a servo motor 803, an angle sensor 812, and an outdoor light intensity sensor 813, and the angle sensor 812 is arranged on the compound parabolic concentrator 7, so The indoor light intensity sensor 801, the outdoor light intensity sensor 813 and the angle sensor 812 are all connected to the input end of the PLC controller 802, the output end of the PLC controller 802 is connected to the servo motor 803, and the The servo motor 803 is drivingly connected to the compound parabolic concentrator 7 .

In a specific embodiment of the present invention, the compound parabolic concentrator 7 includes a substrate integrally made of plastic or metal material, and reflective layers are provided on both sides of the substrate; the development of the involute portion 701 The angle is 180°; the angle between the apex and the end point of the parabolic portion 702 and the straight line formed by the center of the heat collecting tube 6 is 100°; the end point of the parabolic portion 702 reaches the heat collecting tube The ratio of the center distance of 6 to the radius of the heat collecting tube 6 is 15.

In a specific embodiment of the present invention, the opening direction of the compound parabolic concentrator 7 faces one side of the sun-facing glass 2; the rotatable angle range of the compound parabolic concentrator 7 is within the In the range of 0° to 60° on one side of 2, when the starting point of the involute portion 701 and the end point of the involute portion 701 are on the same horizontal plane, the rotation angle of the compound parabolic concentrator 7 is 0°, the parabolic portion 702 is tangent to the involute portion 701 of the compound parabolic concentrator 7 adjacent above, and the point of tangency is the same as that of the compound parabolic concentrator 7 adjacent above. The included angle between the line connecting the centers of the base circles of the involute portion 701 and the horizontal line is 69°.

In a specific embodiment of the present invention, the servo motor 803 is arranged on the inner top of the frame 1 , the rotating shaft of the servo motor 803 is provided with a rotating wheel 804 , and a deck 805 is provided on the rotating wheel 804 , the card holder 1 805 is rotatably connected to a joint type flexible connecting rod 807 through a buckle 1 806, and the bottom end of the joint type flexible connecting rod 807 is rotatably buckled by a buckle 2 808 on the glass Inside the deck two 809 that is provided with on the first compound parabolic concentrator 711 at the top of the curtain wall; the two ends of the compound parabolic concentrator 7 are connected by a connecting rod 810, and the two ends of the compound parabolic concentrator 7 Both left and right end faces are provided with clamping holes 703, and the connecting rod 810 is provided with clamping columns 811 corresponding to the clamping holes 703, and the clamping columns 811 are rotatably clamped in the clamping holes 703. Inside.

In a specific embodiment of the present invention, the second deck 809 is located on the upper part of the parabolic part 702 of the first compound parabolic concentrator 711, and the clamping hole 703 is located on the compound parabolic concentrator 7 The upper part of the two ends of the parabolic portion 702.

In a specific embodiment of the present invention, the heat collecting tube 6 is made of metal material, the thickness of the heat collecting tube 6 is 0.3-1.5 mm, and the outer diameter of the heat collecting tube 6 is not more than 5 mm.

As shown in Fig. 8, the embodiment of the present invention also relates to a dimming method of a dimmable solar collector glass curtain wall, using the above-mentioned angle control device 8 to control the combined The angle of rotation of the parabolic concentrator 7.

In the dimming method described in the embodiment of the present invention, when the dimmable solar heat collecting glass curtain wall is in the lighting priority mode, the indoor light intensity sensor 801 collects the indoor light intensity signal, and sends the indoor light intensity signal to the PLC controller 802, the PLC controller 802 judges whether the indoor light intensity signal is within the preset indoor light intensity optimal data range, if the indoor light intensity signal is not within the indoor light intensity optimal data range, the PLC The controller 802 sends a control signal to control the servo motor 803 to make a corresponding rotation, adjust the rotation angle of the compound parabolic concentrator 7, thereby changing the indoor light intensity, and make the indoor light intensity signal enter the optimal data range of the indoor light intensity Inside.

In the dimming method described in the embodiment of the present invention, when the dimmable solar heat collecting glass curtain wall is in the heat collection priority mode, the angle sensor 812 detects the rotation angle of the compound parabolic concentrator 7 and rotates The angle signal is sent to the PLC controller 802, and the PLC controller 802 judges whether the rotation angle is within the preset optimal heat collection angle range, if the rotation angle signal is not within the optimal rotation angle range, the PLC The controller 802 sends a control signal to control the servo motor 803 to make a corresponding rotation, adjust the rotation angle of the compound parabolic concentrator 7, and make the rotation angle of the compound parabolic concentrator 7 enter the optimum heat collection angle range Inside.

When the present invention is used in practice, the specific adjustment and control principle is shown in Figure 8, the sunny glass 2 and the back glass 3 form a high-temperature interlayer, and the solar heat collection system is installed inside the interlayer. The heat collecting fluid first enters the liquid inlet pipe 4, then passes through the parallel heat collecting pipe 6, and then enters the liquid outlet pipe 5 to complete the heat collecting process. The compound parabolic concentrator 7 not only acts as a sunshade shutter but also as a solar radiation heat energy concentrator, reflecting the sun's rays onto the heat collecting tube 6 . Since the diameter of the heat collecting tube 6 is less than or equal to 5mm, the inner thickness of the entire integrated glass curtain wall is less than 70mm. The involute part 701 of the compound parabolic concentrator 7 is connected to the heat collecting tube 6 through a bearing coaxial with the heat collecting tube 6, so that the compound parabolic concentrator 7 can rotate around the heat collecting tube 6, and the angle sensor 812 can cooperate with the bearing to detect Angle of rotation to compound parabolic concentrator 7.

The involute portion 701 of the compound parabolic concentrator 7 has a spread angle of 180°, and the distance from the end point of the parabolic portion 702 to the heat collecting tube 6 is 15 times the radius of the heat collecting tube 6, so that the compound parabolic concentrator 7 is at 0-60° When the rotation angle range is within a certain range, better light reflection and heat collection efficiency are achieved.

The dimmable solar heat-collecting glass curtain wall described in the embodiment of the present invention has two operating modes, one is the lighting priority mode, and the other is the heat collection priority mode. The specific adjustment control principle is shown in FIG. 7 .

The lighting priority mode is adjusted based on the indoor light intensity, and the heat collection priority mode is adjusted based on the size of the sun's altitude angle. The two modes are manually set according to needs. If there are few people in the room and the indoor lighting requirements are low, it can be set to the heat collection priority mode, and more heat can be obtained at this time. When there are many people in the room and the indoor lighting requirements are high, it can be set to the lighting priority mode to meet the indoor lighting requirements.

In the embodiment of the present invention, an indoor light intensity sensor 801 and an outdoor light intensity sensor 813 are respectively installed indoors and outdoors. Optimum data range, the indoor light intensity sensor 801 sends the indoor light intensity signal to the PLC controller 802, and the PLC controller 802 judges whether the indoor light intensity is within the optimal data range according to the indoor light intensity signal, if the indoor light intensity data In the optimal data range, the PLC controller 802 controls the servo motor 803 to be in a stop state, and the compound parabolic concentrator 7 does not rotate.

When the indoor light intensity sensor 801 detects that the indoor light intensity data is greater than the preset optimal data range, at this time, the outdoor light intensity is stronger than the indoor light intensity, the outdoor light intensity sensor 813 detects the outdoor light intensity, and the outdoor light intensity The signal is sent to the PLC controller 802, and the PLC controller 802 receives the signal from the outdoor light sensor 813 to control the forward rotation of the servo motor 803, driving the rotating wheel 804 to rotate, and the rotating wheel 804 drives the joint-type flexible connecting rod 807 to rotate upwards, and the joint-type flexible connection The rod 807 drives the first compound parabolic concentrator 711 to rotate upward around the heat collecting tube 6, and the rotation of the first compound parabolic concentrator 711 drives other compound parabolic concentrators 7 to rotate upward synchronously through the connecting rod 810, and all the compound parabolic concentrators The rotation angles of 7 are all reduced. At this time, the light intensity entering the room is weakened accordingly, and the indoor light intensity is gradually weakened until the indoor light intensity is within the preset optimal data range, and the PLC controller 802 controls the servo motor 803 to stop working. .

When the indoor light intensity sensor 801 detects that the indoor light intensity is less than the optimal data range, at this time, the outdoor light intensity is weaker than the indoor light intensity, then the PLC controller 802 receives the signal from the indoor light intensity sensor 801 to control the servo motor 803 to reverse, The rotating wheel 804 is driven to rotate, and the rotating wheel 804 drives the joint type flexible connecting rod 807 to rotate downward, generating a downward thrust, pushing the first compound parabolic concentrator 711 to rotate downward around the heat collecting tube 6, and the first compound parabolic concentrator The rotation of 711 drives other compound parabolic concentrators 7 to rotate downward synchronously through connecting rod 810, and the rotation angles of all compound parabolic concentrators 7 increase synchronously. At this time, the intensity of light entering the room increases accordingly until it reaches the preset Within the optimal data range, the PLC controller 802 controls the servo motor 803 to stop working.

When in the heat collection priority mode, according to the longitude and latitude of the installation area and the local time, the optimal rotation angle range of the parabolic concentrator 7 is preset, and the rotation angle of the compound parabolic concentrator 7 is detected by the angle sensor 812, and the rotation angle The signal is sent to the PLC controller 802, and the PLC controller 802 judges whether the rotation angle is within the optimal rotation angle range. When the rotation angle is within the optimal rotation angle range, the PLC controller 802 controls the servo motor 803 to stop working, and the compound parabola Concentrator 7 does not rotate.

If the angle sensor 812 detects that the rotation angle of the compound parabolic concentrator 7 is less than the optimal rotation angle range, the PLC controller 802 controls the reverse rotation of the servo motor 803 to increase the rotation angle of the compound parabolic concentrator 7 until reaching the optimum within the angle range or up to the maximum tilt angle.

When the rotation angle of the compound parabolic concentrator is 0°, the parabolic part 702 of the compound parabolic concentrator 7 below is tangent to the involute part 701 of the compound parabolic concentrator 7 above, and the tangent point is with the heat collecting tube 6 above The angle formed by the line connecting the centers of the circles and the horizontal line is 69°. At this time, the vertical distance between two adjacent heat collecting tubes 6 can be determined. At this time, the compound parabolic concentrator is in a completely closed state, and only a minimum amount of light enters the room. Water enters the solar heat collector through the liquid inlet pipe 4, and when passing through the heat collecting pipe 6, the heat collecting pipe 6 transfers the absorbed solar energy to the water in the heat collecting pipe 6, and the water heated by the heat collecting pipe 6 flows out of the solar energy collector through the liquid outlet pipe 5. Heaters are available for people to use.

The dimmable solar heat-collecting glass curtain wall described in the embodiment of the present invention can also be provided with an angle fluctuation knob on the outside, and the knob is connected with the running wheel. Pull the CPC to move, and then through the connecting rod device, all the CPCs move synchronously to realize the adjustment of the indoor light intensity.

In the embodiment of the present invention, it can be expected that the indoor light intensity is low in the morning and evening. At this time, the rotation angle of the compound parabolic concentrator 7 is relatively large, while the solar altitude angle is small, and the heat collecting tube 6 can pass through the compound parabolic The reflection of the parabolic part 702 of the concentrator 7 obtains more solar radiation; at noon, the indoor light intensity increases, and the rotation angle of the compound parabolic concentrator 7 decreases to reduce the light entering the room. At this time, the solar altitude angle Higher, the heat collecting tube 6 can obtain more solar radiation through the reflection of the compound parabolic concentrator 7 . That is to say, the change of the rotation angle of the compound parabolic concentrator 7 is automatically adjusted according to the indoor and outdoor light intensity, and its inclination angle is synchronized with the sun's altitude angle, so that the heat collecting tube 6 can obtain more energy, thereby realizing indoor light. Emphasize the unity of regulation and efficient solar energy utilization.

In summary, the present invention realizes two operation modes of the dimmable solar heat-collecting glass curtain wall through the control of the angle control device 8, one is the daylighting priority mode, and the other is the heat collection priority mode, and the daylighting priority mode is Based on the indoor light intensity, the optimal data range of the indoor light intensity is preset in the PLC controller 802, and the angle of the compound parabolic concentrator 7 is adjusted. The heat collection priority mode is based on the size of the sun's altitude angle. The optimal angle range of the compound parabolic concentrator 7 is preset in advance, and the angle of the compound parabolic concentrator 7 is adjusted; when the light intensity is high, the angle control device 8 can control the rotation of the compound parabolic concentrator 7 to reduce the compound parabolic concentrator 7. The rotation angle of the concentrator 7 reduces the light intensity irradiated into the room, so that more solar radiation is reflected and absorbed; when the light is weak, the angle control device 8 can control the rotation of the compound parabolic concentrator 7 to increase the compound parabolic concentrator. The rotation angle of the optical device 7 increases the light intensity irradiated indoors and reduces the utilization ratio of solar heat. In the case of weak light intensity, due to the concentrating effect of the compound parabolic concentrator 7, a certain heat collection efficiency and collection efficiency can still be achieved. heat temperature. The compound parabolic concentrator 7 with adjustable angle is introduced into the integrated glass curtain wall, which not only plays the role of sunshade but also plays the role of light concentrating, and because its angle is related to the sun altitude angle, it can adjust the indoor light intensity at the same time, The utilization of solar energy is maximized, and the energy utilization efficiency is improved.

Those of ordinary skill in the art can understand that: the components in the device in the embodiment of the present invention can be distributed in the device of the embodiment according to the description of the embodiment, and can also be correspondingly changed and located in one or more devices different from the embodiment . The components in the above embodiments can be combined into one component, and can also be further divided into multiple subcomponents.

The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed in the present invention can easily think of changes or Replacement should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims (9)

1. a kind of dimmable solar energy heat collecting glass curtain wall, comprise frame (1) and be arranged on the sunshine glass (2) on described frame (1), back sun glass (3), described sun glass (2) and A solar heat collector is arranged between the back sun glass (3), and the solar heat collector includes a liquid outlet pipe (4) and a liquid inlet pipe (5) arranged vertically, and the liquid outlet pipe (4) There are several heat collecting tubes (6) arranged horizontally in communication with the liquid inlet pipe (5), and it is characterized in that: each of the heat collecting tubes (6) is rotatably connected with a compound parabolic concentrator (7), The termination point of the involute portion (701) of the compound parabolic concentrator (7) is the apex of the parabolic portion (702) of the compound parabolic concentrator (7); the compound parabolic concentrator (7) ) is connected with an angle control device (8) that controls the compound parabolic concentrator (7) to rotate with the heat collecting tube (6) as the axis of rotation; The angle control device (8) includes an indoor light intensity sensor (801), a PLC controller (802), a servo motor (803), an angle sensor (812), an outdoor light intensity sensor (813), and the angle sensor (812 ) is arranged on the compound parabolic concentrator (7), and the indoor light intensity sensor (801), the outdoor light intensity sensor (813) and the angle sensor (812) are all connected to the PLC controller ( 802), the output end of the PLC controller (802) is connected to the servo motor (803), and the servo motor (803) is connected to the compound parabolic concentrator (7). 2. The dimmable solar heat-collecting glass curtain wall according to claim 1, characterized in that: the compound parabolic concentrator (7) comprises a substrate integrally made of plastic or metal materials, and both sides of the substrate are A reflective layer is provided; the spread angle of the involute portion (701) is 180°; the apex and the termination point of the parabolic portion (702) are respectively connected to the straight line formed by the center of the heat collecting tube (6). The included angle is 100°; the ratio of the distance from the end point of the parabolic portion (702) to the center of the heat collecting tube (6) to the radius of the heat collecting tube (6) is 15. 3. The dimmable solar heat-collecting glass curtain wall according to claim 2, characterized in that: the opening direction of the compound parabolic concentrator (7) is toward the side of the sun-facing glass (2); The rotatable angle range of the parabolic concentrator (7) is within the range of 0° to 60° on one side of the sun-facing glass (2), when the starting point of the involute portion (701) is in line with the involute When the termination points of the part (701) are on the same horizontal plane, the rotation angle of the compound parabolic concentrator (7) is 0°, and the parabolic part (702) is adjacent to the above compound parabolic concentrator (7). ) of the involute portion (701) is tangent, and the line connecting the tangent point with the center of the base circle of the involute portion (701) of the compound parabolic concentrator (7) adjacent above and The angle between the horizontal lines is 69°. 4. The dimmable solar heat-collecting glass curtain wall according to claim 3, characterized in that: the servo motor (803) is arranged on the inner top of the frame (1), and the rotating shaft of the servo motor (803) A runner (804) is provided, and a deck one (805) is provided on the runner (804), and the deck one (805) is rotatably connected with a joint type flexible connecting rod through a buckle one (806) (807), the bottom end of the joint-type flexible connecting rod (807) is rotatably buckled by buckle two (808) on the first compound parabolic concentrator (711) located at the top of the glass curtain wall In some deck two (809); the two ends of the compound parabolic concentrator (7) are connected by connecting rods (810), and the left and right end faces of the compound parabolic concentrator (7) are A clamping hole (703) is provided, and a clamping column (811) corresponding to the clamping hole (703) is provided on the connecting rod (810), and the clamping column (811) is rotatably clamped on the in the card hole (703). 5. The dimmable solar heat-collecting glass curtain wall according to claim 4, characterized in that: the second deck (809) is located at the parabolic portion (702) of the first compound parabolic concentrator (711) ), the clamping hole (703) is located on the upper portion of both ends of the parabolic portion (702) of the compound parabolic concentrator (7). 6. The dimmable solar heat-collecting glass curtain wall according to claim 5, characterized in that: the heat-collecting tube (6) is made of metal material, and the thickness of the heat-collecting tube (6) is 0.3-1.5 mm, The outer diameter of the heat collecting tube (6) is not more than 5mm. 7. A dimming method for a dimmable solar heat-collecting glass curtain wall as claimed in any one of claims 1-6, characterized in that: using the angle control device (8), through the lighting priority mode or the collection Thermal priority mode controls the rotation angle of the compound parabolic concentrator (7). 8. The dimming method of the dimmable solar heat-collecting glass curtain wall according to claim 7, characterized in that: when the dimmable solar heat-collecting glass curtain wall is in the lighting priority mode, the indoor light intensity sensor (801) collects indoor light intensity signal, and send the indoor light intensity signal to the PLC controller (802), and the PLC controller (802) judges whether the indoor light intensity signal is within the preset indoor light intensity optimal data range, If the indoor light intensity signal is not within the optimal data range of the indoor light intensity, the PLC controller (802) sends a control signal to control the servo motor (803) to rotate accordingly, and adjust the compound parabolic concentrator ( 7), thereby changing the indoor light intensity, so that the indoor light intensity signal enters the optimal data range of the indoor light intensity. 9. The dimming method of the dimmable solar heat-collecting glass curtain wall according to claim 7, characterized in that: when the dimmable solar heat-collecting glass curtain wall is in the heat collection priority mode, the angle sensor (812) Detecting the rotation angle of the compound parabolic concentrator (7), sending the rotation angle signal to the PLC controller (802), and the PLC controller (802) judging whether the rotation angle is in the preset optimal set Within the thermal angle range, if the rotation angle signal is not within the optimal rotation angle range, the PLC controller (802) sends a control signal to control the servo motor (803) to make a corresponding rotation to adjust the compound parabolic focusing The rotation angle of the device (7), so that the rotation angle of the compound parabolic concentrator (7) enters the optimum heat collection angle range.