Solar heat collection device with reverse illumination function

Abstract

The utility model provides a solar heat collecting device with reverse illumination, which belongs to the technical field of solar energy utilization and comprises a mounting seat, a support rod and an arc-shaped plate, an annular guide rail is arranged on the mounting seat, a moving mechanism is arranged on the annular guide rail, and the moving mechanism can move along the annular guide rail. The supporting rod is fixed to the moving mechanism, and the bottom of the supporting rod is connected with the moving mechanism. A plurality of reflecting units are arranged on the arc-shaped plate and form a reflecting surface on the arc-shaped plate. The arc-shaped plate is arranged at the top of the supporting rod, and a swing adjusting mechanism is arranged between the bottom of the arc-shaped plate and the top of the supporting rod and used for adjusting the angle of the arc-shaped plate. The solar heat collection device with the reverse illumination function can move on the annular guide rail through the moving mechanism to achieve sunlight tracking. In addition, the use flexibility is high, and the angle of the arc-shaped plate can be adjusted through the swing adjusting mechanism so as to meet different heat collection requirements.

Description

Technical Field

[0001] The utility model relates to the technical field of solar energy utilization, in particular to a reverse illumination solar heat collecting device. Background Art

[0002] With the growing global demand for renewable energy, solar energy, as a clean, sustainable, and green energy source, has been widely studied and applied in its utilization technology. As an important branch of solar energy utilization, solar thermal collection technology mainly collects solar radiation energy and converts it into thermal energy to meet the thermal energy needs of industrial, civil, and agricultural fields. For example, collected solar radiation energy can be used to dry and process food products. However, traditional solar thermal collection devices usually adopt a direct irradiation method, that is, they rely on solar radiation energy to be directly focused on the collector to achieve thermal energy conversion. Although this method of solar thermal collection device is simple and direct, the heat collection effect is greatly reduced when the lighting conditions are limited. This causes traditional solar thermal collection devices to face many challenges in practical applications, especially under poor lighting conditions, such as cloudy days, nights, or insufficient sunlight in winter, the heat collection efficiency drops significantly, limiting its wide application and effectiveness.

[0003] To improve the heat collection efficiency of solar thermal collectors under complex lighting conditions, researchers are constantly exploring new heat collection technologies and device designs. In recent years, reverse illumination technology has been introduced as an innovative approach to the field of solar thermal collection. This technology aims to overcome the limitations of direct illumination by directing solar radiation energy to the collector through indirect illumination methods such as reflection and scattering. However, existing reverse illumination solar thermal collectors often suffer from low reflection efficiency and inflexible adjustment, making it difficult to meet the demand for efficient heat collection under different lighting conditions.

[0004] Therefore, it is necessary to improve the existing reverse illumination solar thermal collector to overcome the defects of the prior art. Utility Model Content

[0005] In order to overcome the problems existing in the related art, the purpose of the present invention is to provide a reverse-illumination solar thermal collector device, which can move on a circular guide rail through a moving mechanism to achieve sunlight tracking; and has high flexibility in use, and can adjust the angle of the arc plate through a swing adjustment mechanism to meet different heat collection needs.

[0006] A reverse illumination solar heat collecting device, comprising:

[0007] A mounting seat, wherein the mounting seat is provided with an annular guide rail, and the annular guide rail is provided with a moving mechanism, and the moving mechanism can move along the annular guide rail;

[0008] A support rod, wherein the support rod is fixed to the moving mechanism, and the bottom of the support rod is connected to the moving mechanism;

[0009] An arc-shaped plate is provided with a plurality of reflective units on the arc-shaped plate, and the plurality of reflective units form a reflective surface on the arc-shaped plate; the arc-shaped plate is arranged at the top of the support rod, and a swing adjustment mechanism is provided between the bottom of the arc-shaped plate and the top of the support rod, and the swing adjustment mechanism is used to adjust the angle of the arc-shaped plate.

[0010] In a preferred technical solution of the present invention, the swing adjustment mechanism includes a first bracket, a first connecting rod, a tray, a rotating disk, and a swing driving device, wherein the first bracket is arranged at the bottom of the curved plate, the tray is arranged on one side of the first bracket, and the axis of the tray coincides with the axis of the first bracket, and the first connecting rod is connected between the tray and the first bracket;

[0011] The rotating disk is arranged on a side of the tray away from the first bracket, and the swing driving device is arranged on the rotating disk. The swing driving device is used to drive the tray to swing.

[0012] In a preferred technical solution of the present invention, two swing drive devices are provided, and the two swing drive devices are symmetrical about the axis of the rotating disk;

[0013] Each of the swing drive devices includes a first motor and a hinge link. The first motor is fixed on the rotating disk. One end of the hinge link is hinged to the tray, and the other end is hinged to the output end of the first motor. The first motor drives the tray to swing through the hinge link.

[0014] In a better technical solution of the present invention, a connecting seat is provided on one side of the tray, a ball cavity is provided on the connecting seat, a second connecting rod is provided on the rotating disk, one end of the second connecting rod is fixedly connected to the rotating disk, and a first connecting ball is provided at the other opposite end, and the first connecting ball is provided in the ball cavity.

[0015] In a preferred technical solution of the present invention, a plurality of first connecting rods are provided, and the plurality of first connecting rods are evenly distributed between the first bracket and the tray along the circumference of the first bracket.

[0016] In a preferred technical solution of the present utility model, the moving mechanism includes a moving base, the bottom of the moving base is provided with a track groove, and the shape of the track groove is adapted to the shape of the annular guide rail;

[0017] A plurality of mobile drive devices are provided in the mobile base, each of the mobile drive devices includes a second motor and a track wheel, the second motor is provided in the mobile base, the track wheel is provided at the output end of the second motor, and one side of the track wheel is connected to the annular guide rail.

[0018] In a preferred technical solution of the present invention, a mounting position is provided on the movable base, a third motor is provided in the mounting position, and an output end of the third motor is fixedly connected to the support rod.

[0019] In a preferred technical solution of the present invention, the reflection unit includes a reflection bracket, a reflector and a reflection drive device, the reflection bracket is fixed on the arc plate, the reflector and the reflection drive device are both arranged on the reflection bracket, and the reflection drive device drives the reflector to swing on the reflection bracket.

[0020] In a preferred technical solution of the present invention, the reflective bracket includes a reflective base, a swing plate, and a second bracket. The reflective base is fixed to the arc-shaped plate. The swing plate is arranged on the top of the reflective base, and the swing plate and the reflective base are connected by a ball joint. The second bracket is fixed to the reflective base and is located on one side of the swing plate.

[0021] A fourth motor is provided on the second bracket, an eccentric ball is provided at the center of the swing plate, and an output end of the fourth motor is connected to the eccentric ball via a right-angle connecting rod; one end of the right-angle connecting rod is fixedly connected to the output end of the fourth motor, and the other end thereof is connected to the eccentric ball;

[0022] The reflective bracket is also provided with a third connecting rod, the bottom of the third connecting rod is provided with a second connecting ball, the second connecting ball is connected to the swing plate, and the top of the third connecting rod passes through the second bracket and is fixedly connected to the reflector.

[0023] In a preferred technical solution of the present invention, six second connecting rods are provided, and the six second connecting rods are evenly distributed between the swing plate and the second bracket along the circumference of the swing plate.

[0024] The beneficial effects of the utility model are:

[0025] The utility model provides a reverse-illumination solar thermal collector device. The device comprises a mounting base, a support rod, and a curved plate. The mounting base is provided with an annular guide rail, and the annular guide rail is provided with a movable mechanism capable of moving along the annular guide rail. The support rod is fixed to the movable mechanism, and the bottom of the support rod is connected to the movable mechanism. The curved plate is provided with multiple reflective units, which form a reflective surface on the curved plate. The curved plate is mounted on the top of the support rod, and a swing adjustment mechanism is provided between the bottom of the curved plate and the top of the support rod. The swing adjustment mechanism is used to adjust the angle of the curved plate. The device reflects solar radiation energy to the heat collector through the reflective units, effectively improving heat collection efficiency even on cloudy days, at night, or in winter when sunlight is insufficient. In actual application, the movable mechanism can move along the annular guide rail to achieve sunlight tracking, ensuring that the device always faces the sun and maximizes the amount of solar radiation received. The swing adjustment mechanism adjusts the angle of the curved plate according to the position of the sun, ensuring that the reflected light is always located at the bottom of the energy conversion device, further improving heat collection efficiency and providing greater adjustment flexibility. The device has a wide range of applications. It is not only suitable for the field of grain drying, but can also be used in other occasions that require solar heat collection, such as solar water heating systems, solar heating systems, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a three-dimensional diagram of a reverse-illumination solar thermal collector provided in an embodiment of the present utility model;

[0027] Figure 2 This is an exploded view of the reverse illumination solar thermal collector provided in an embodiment of the present invention without the mounting base;

[0028] Figure 3 is an exploded view of the swing adjustment mechanism provided in an embodiment of the present utility model;

[0029] Figure 4 This utility model Figure 3 A partial enlarged view of point A in the middle;

[0030] Figure 5 is an exploded view of a reflection unit provided in an embodiment of the present utility model;

[0031] Figure 6 It is an exploded view of the moving mechanism provided in the embodiment of the present utility model.

[0032] Reference numerals:

[0033] 1. Mounting seat; 11. Annular guide rail; 2. Arc plate; 3. Moving mechanism; 31. Moving base; 311. Mounting position; 32. Track groove; 33. Second motor; 34. Track wheel; 4. Reflection unit; 41. Reflector; 42. Second bracket; 43. Swinging disk; 44. Reflection base; 45. Fourth motor; 46. Right-angle connecting rod; 47. Eccentric ball; 48. Second connecting ball; 49. Third connecting rod; 5. Support rod; 6. Third motor; 7. Swing adjustment mechanism; 71. First bracket; 72. Tray; 721. Connecting seat; 73. Rotating disk; 731. Second connecting rod; 732. First connecting ball; 74. Swing driving device; 741. Hinge connecting rod; 742. First motor; 75. First connecting rod. DETAILED DESCRIPTION

[0034] The following describes preferred embodiments of the present invention in more detail with reference to the accompanying drawings. Although preferred embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0035] In recent years, reverse illumination technology has been introduced as an innovative approach to solar thermal collection. This technology aims to overcome the limitations of direct illumination by directing solar radiation to the collector through indirect methods such as reflection and scattering. However, existing reverse illumination solar thermal collectors often suffer from low reflection efficiency and inflexible adjustment, making them difficult to meet the demand for efficient heat collection under varying lighting conditions.

[0036] Based on this, the present application provides a reverse illumination solar thermal collector.

[0037] See also Figures 1-6 The present application provides a reverse illumination solar thermal collector device, comprising:

[0038] A mounting base 1, wherein the mounting base 1 is provided with an annular guide rail 11, and a moving mechanism 3 is provided on the annular guide rail 11, and the moving mechanism 3 can move along the annular guide rail 11;

[0039] In actual use, the mounting base 1 is securely positioned, for example, by being fixed to a mounting surface with screws. The annular guide rail 11 provided thereon provides a movement path for the moving mechanism 3. The moving mechanism 3 can move smoothly on the annular guide rail 11, thereby adjusting the position of the entire thermal collector according to the position of the sun, thereby achieving sunlight tracking.

[0040] The support rod 5 is fixed on the moving mechanism 3, and the bottom of the support rod 5 is connected to the moving mechanism 3; the support rod 5 is fixed on the moving mechanism 3 and moves with the movement of the moving mechanism 3, so that the position of the curved plate 2 changes with the position of the moving mechanism 3.

[0041] An arc-shaped plate 2 is provided with a plurality of reflecting units 4, and the plurality of reflecting units 4 form a reflective surface on the arc-shaped plate 2; the arc-shaped plate 2 is provided at the top of the support rod 5, and a swing adjustment mechanism 7 is provided between the bottom of the arc-shaped plate 2 and the top of the support rod 5, and the swing adjustment mechanism 7 is used to adjust the angle of the arc-shaped plate 2.

[0042] This reflective surface can effectively reflect sunlight and concentrate it to the required location, such as energy conversion device, thereby improving the efficiency of solar energy utilization.

[0043] The energy conversion device of the present application may be any one of a solar thermal collector, a solar photovoltaic panel or a thermal energy storage device.

[0044] The above-mentioned reverse-illumination solar thermal collector device can reflect solar radiation energy to the thermal collector through the reflection unit 4, and can effectively improve the thermal collection efficiency even when there is insufficient sunlight on cloudy days, at night or in winter. In actual applications, the moving mechanism 3 can move along the annular guide rail 11 to achieve sunlight tracking, ensuring that the device always faces the sun and maximizes the reception of solar radiation energy. The swing adjustment mechanism 7 can adjust the angle of the arc plate 2 according to the position of the sun, so that the reflected light is always located at the bottom of the energy conversion device, further improving the thermal collection efficiency and having greater adjustment flexibility. The device has a wide range of applications and is not only suitable for the field of grain drying, but can also be used in other occasions that require solar thermal collection, such as solar water heating systems, solar heating systems, etc.

[0045] Furthermore, the swing adjustment mechanism 7 includes a first bracket 71, a first connecting rod 75, a tray 72, a rotating disk 73 and a swing driving device 74. The first bracket 71 is arranged at the bottom of the curved plate 2, and the tray 72 is arranged on one side of the first bracket 71. The axis of the tray 72 coincides with the axis of the first bracket 71. The first connecting rod 75 is connected between the tray 72 and the first bracket 71.

[0046] The rotating disk 73 is disposed on a side of the tray 72 away from the first bracket 71 . The swing driving device 74 is disposed on the rotating disk 73 . The swing driving device 74 is used to drive the tray 72 to swing.

[0047] The first bracket 71 is firmly placed on the bottom of the curved plate 2, providing stable support for the entire swing mechanism. The tray 72 is set on one side of the first bracket 71 and coincides with the axis of the first bracket 71. This design ensures the stability and accuracy of the tray 72 during the swing process.

[0048] The first connecting rod 75 connects the tray 72 and the first bracket 71, transmitting force and stabilizing the tray 72. When the swing drive 74 is activated, it drives the tray 72 to swing, which in turn causes the entire first bracket 71 to swing, thereby achieving the swing of the curved plate 2. Preferably, multiple first connecting rods 75 are provided, evenly distributed along the circumference of the first bracket 71 between the first bracket 71 and the tray 72. This plurality of first connecting rods 75 enhances the stability of the first bracket 71.

[0049] In actual operation, when the angle of the curved plate 2 needs to be adjusted, the swing drive 74 activates, driving the tray 72 to swing via the rotating disk 73. The tray 72 is connected to the first bracket 71 via a first connecting rod 75, so the swing of the tray 72 causes the angle of the curved plate 2 to adjust. This design makes adjusting the angle of the curved plate 2 simple and convenient, helping to improve the flexibility and efficiency of the solar thermal collector. Precise adjustment of the angle of the curved plate 2 helps reflect sunlight to a specific location, improving the efficiency of solar energy utilization; it also makes the solar thermal collector more flexible and versatile, suitable for a variety of environments and application scenarios.

[0050] Furthermore, two swing drive devices 74 are provided, and the two swing drive devices 74 are symmetrical about the axis center of the rotating disk 73; the design of the two swing drive devices 74 not only enhances the stability and balance of the swing adjustment, but also makes the tray 72 more evenly stressed during the swinging process, thereby enabling the arc plate 2 to swing left and right.

[0051] Each of the swing drive devices 74 includes a first motor 742 and a hinge link 741. The first motor 742 is fixed on the rotating disk 73. One end of the hinge link 741 is hinged to the tray 72, and the other end is hinged to the output end of the first motor 742. The first motor 742 drives the tray 72 to swing through the hinge link 741.

[0052] In actual operation, when the angle of the curved plate 2 needs to be adjusted, the first motor 742 is activated, driving the tray 72 to swing through the hinge link 741. Because the two swing drive devices 74 are symmetrical about the axis of the rotating disk 73, the tray 72 can maintain a stable posture during the swing process, avoiding the problem of swing instability caused by uneven force.

[0053] In another embodiment, the middle portion of the hinge link 741 may also be hinged to a fixed object to ensure working stability.

[0054] Furthermore, a connecting seat 721 is provided on one side of the tray 72, a ball cavity is provided on the connecting seat 721, a second connecting rod 731 is provided on the rotating disk 73, one end of the second connecting rod 731 is fixedly connected to the rotating disk 73, and a first connecting ball 732 is provided at the other opposite end, and the first connecting ball 732 is arranged in the ball cavity.

[0055] The first connecting ball 732 cooperates with the ball cavity to form a fulcrum between the second connecting rod 731 and the connecting base 721. When the position or angle of the items on the tray 72 needs to be adjusted, the first motor 742 and the hinge link 741 drive the rotating disk 73 to swing. Due to the cooperation between the first connecting ball 732 and the ball cavity, the rotating disk 73 can flexibly adjust its angle, thereby changing the angle of the first bracket 71.

[0056] The present application also provides a detailed structure of the moving mechanism 3. Specifically, the moving mechanism 3 includes a moving base 31, a bottom of which is provided with a track groove 32, the shape of which is adapted to the shape of the annular guide rail 11;

[0057] The mobile base 31 is provided with a plurality of mobile driving devices, each of which includes a second motor 33 and a track wheel 34. The second motor 33 is provided in the mobile base 31, and the track wheel 34 is provided at the output end of the second motor 33. One side of the track wheel 34 is connected to the annular guide rail 11.

[0058] Each mobile drive unit includes a second motor 33 and a track wheel 34. The second motor 33 is mounted inside the mobile base 31 to save space and enhance structural stability. The track wheel 34 is mounted at the output end of the second motor 33 and is driven by the motor to rotate. In actual use, when the second motor 33 is activated, it drives the track wheel 34 to rotate rapidly. One side of the track wheel 34 is in close contact with the annular guide rail 11, generating forward momentum through friction, thereby enabling the mobile base 31 to move smoothly on the annular guide rail 11.

[0059] Furthermore, a mounting position 311 is provided on the movable base 31 , a third motor 6 is provided in the mounting position 311 , and an output end of the third motor 6 is fixedly connected to the support rod 5 .

[0060] The output end of the third motor 6 is firmly connected to the support rod 5 . By rotating the motor, the angle and position of the support rod 5 can be accurately adjusted, thereby changing the angle of the arc plate 2 set on the support rod 5 .

[0061] In another embodiment, the reflection unit 4 includes a reflection bracket, a reflector 41 and a reflection driving device, the reflection bracket is fixed on the curved plate 2, the reflector 41 and the reflection driving device are both arranged on the reflection bracket, and the reflection driving device drives the reflector 41 to swing on the reflection bracket.

[0062] Furthermore, the reflective bracket includes a reflective base 44, a swing plate 43, and a second bracket 42. The reflective base 44 is fixed on the curved plate 2. The swing plate 43 is arranged on the top of the reflective base 44. The swing plate 43 and the reflective base 44 are connected by a ball joint. The second bracket 42 is fixed on the reflective base 44 and is located on one side of the swing plate 43.

[0063] A fourth motor 45 is provided on the second bracket 42, and an eccentric ball 47 is provided at the center of the swing plate 43. The output end of the fourth motor 45 is connected to the eccentric ball 47 via a right-angle connecting rod 46; one end of the right-angle connecting rod 46 is fixedly connected to the output end of the fourth motor 45, and the other end thereof is connected to the eccentric ball 47.

[0064] The reflector bracket is further provided with a third connecting rod 49. A second connecting ball 48 is provided at the bottom of the third connecting rod 49. The second connecting ball 48 is connected to the swing plate 43. The top of the third connecting rod 49 passes through the second bracket 42 and is fixedly connected to the reflector 41. More specifically, six second connecting rods 731 are provided, and the six second connecting rods 731 are evenly distributed between the swing plate 43 and the second bracket 42 along the circumference of the swing plate 43.

[0065] Specifically, in actual applications, the fourth motor 45 drives the right-angle connecting rod 46 to rotate, and the right-angle connecting rod 46 drives the eccentric ball 47 to rotate, thereby changing the angle of the swing plate 43, causing the swing plate 43 to tilt in different directions. Because the six second connecting rods 731 are evenly distributed along the circumference of the swing plate 43 between the swing plate 43 and the second bracket 42, when the swing plate 43 swings, it pushes the second connecting ball 48 and pushes the second connecting rod 731 to rise and fall, changing the position of the top of the second connecting rod 731, thereby changing the angle of the reflector 41. This enables the reflector unit 4 to achieve intelligent angle adjustment through the fourth motor 45. When the entire heat collection device requires high light intensity, the angle of the reflector unit 4 can be adjusted to achieve a small area of reflected light illumination effect. When the entire heat collection device requires low light intensity, the angle of the reflector unit 4 can be adjusted to position the reflected light to present a large area of illumination effect.

[0066] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0067] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0068] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A solar heat collecting device with reverse illumination, characterized in that: include: A mounting seat, wherein the mounting seat is provided with an annular guide rail, and the annular guide rail is provided with a moving mechanism, and the moving mechanism can move along the annular guide rail; A support rod, wherein the support rod is fixed to the moving mechanism, and the bottom of the support rod is connected to the moving mechanism; An arc-shaped plate is provided with a plurality of reflective units on the arc-shaped plate, and the plurality of reflective units form a reflective surface on the arc-shaped plate; the arc-shaped plate is arranged at the top of the support rod, and a swing adjustment mechanism is provided between the bottom of the arc-shaped plate and the top of the support rod, and the swing adjustment mechanism is used to adjust the angle of the arc-shaped plate.

2. The reverse illumination solar thermal collector according to claim 1, characterized in that: The swing adjustment mechanism includes a first bracket, a first connecting rod, a tray, a rotating disk, and a swing driving device, wherein the first bracket is arranged at the bottom of the curved plate, the tray is arranged on one side of the first bracket, and the axis of the tray coincides with the axis of the first bracket, and the first connecting rod is connected between the tray and the first bracket; The rotating disk is arranged on a side of the tray away from the first bracket, and the swing driving device is arranged on the rotating disk. The swing driving device is used to drive the tray to swing.

3. The reverse illumination solar thermal collector according to claim 2, characterized in that: Two swing drive devices are provided, and the two swing drive devices are symmetrical about the axis of the rotating disk; Each of the swing drive devices includes a first motor and a hinge link. The first motor is fixed on the rotating disk. One end of the hinge link is hinged to the tray, and the other end is hinged to the output end of the first motor. The first motor drives the tray to swing through the hinge link.

4. The reverse illumination solar thermal collector according to claim 3, characterized in that: A connecting seat is provided on one side of the tray, a ball cavity is provided on the connecting seat, a second connecting rod is provided on the rotating disk, one end of the second connecting rod is fixedly connected to the rotating disk, and a first connecting ball is provided on the other opposite end, and the first connecting ball is provided in the ball cavity.

5. The reverse illumination solar thermal collector according to claim 2, characterized in that: A plurality of first connecting rods are provided, and the plurality of first connecting rods are evenly distributed between the first bracket and the tray along the circumference of the first bracket.

6. The reverse illumination solar thermal collector according to any one of claims 1 to 5, characterized in that: The moving mechanism includes a moving base, the bottom of the moving base is provided with a track groove, and the shape of the track groove is adapted to the shape of the annular guide rail; A plurality of mobile drive devices are provided in the mobile base, each of the mobile drive devices includes a second motor and a track wheel, the second motor is provided in the mobile base, the track wheel is provided at the output end of the second motor, and one side of the track wheel is connected to the annular guide rail.

7. The reverse illumination solar thermal collector according to claim 6, characterized in that: The mobile base is provided with a mounting position, the mounting position is provided with a third motor, and the output end of the third motor is fixedly connected to the support rod.

8. The reverse illumination solar thermal collector device according to claim 4, characterized in that: The reflection unit includes a reflection bracket, a reflective mirror and a reflection driving device. The reflection bracket is fixed on the arc plate. The reflective mirror and the reflection driving device are both arranged on the reflection bracket. The reflection driving device drives the reflective mirror to swing on the reflection bracket.

9. The reverse illumination solar thermal collector according to claim 8, characterized in that: The reflective bracket includes a reflective base, a swing plate, and a second bracket. The reflective base is fixed to the curved plate. The swing plate is arranged on the top of the reflective base, and the swing plate and the reflective base are connected via a ball joint. The second bracket is fixed to the reflective base and is located on one side of the swing plate. A fourth motor is provided on the second bracket, an eccentric ball is provided at the center of the swing plate, and an output end of the fourth motor is connected to the eccentric ball via a right-angle connecting rod; one end of the right-angle connecting rod is fixedly connected to the output end of the fourth motor, and the other end thereof is connected to the eccentric ball; The reflective bracket is also provided with a third connecting rod, the bottom of the third connecting rod is provided with a second connecting ball, the second connecting ball is connected to the swing plate, and the top of the third connecting rod passes through the second bracket and is fixedly connected to the reflector.

10. The reverse illumination solar thermal collector according to claim 9, characterized in that: Six second connecting rods are provided, and the six second connecting rods are evenly distributed between the swing plate and the second bracket along the circumference of the swing plate.

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