A solar energy high-efficiency heat collecting device

Abstract

The utility model belongs to solar energy utilization technical field discloses a kind of solar high-efficiency heat collection device, including box, the box is by bottom plate, upper inclined plate and side plate head-to-tail fixed connection, form triangular structure, and the middle part of upper inclined plate and side plate is respectively provided with first transparent glass plate and second transparent glass plate, and the bottom plate in box interior is provided with multiple serpentine layout's bellows, and the end of side plate away from bellows is fixedly connected with support, and the other end of support is rotatably connected with light-collecting assembly, and the middle part of light-collecting assembly is provided with light-collecting concave mirror;The utility model whole simple structure can improve solar energy heat collection efficiency, efficiently utilize solar energy, improve use effect.

Description

Technical Field

[0001] This utility model belongs to the field of solar energy utilization technology, specifically, it relates to a high-efficiency solar thermal collector. Background Technology

[0002] As the global energy structure shifts towards cleaner and lower-carbon energy, the efficient development and utilization of solar energy, as a renewable energy source with abundant reserves and wide distribution, has become one of the core directions for alleviating dependence on traditional fossil fuels and addressing environmental issues. Solar thermal collectors, as key equipment for solar energy utilization, absorb solar radiation and convert it into heat energy (or further drive subsequent energy utilization systems). They are widely used in building heating, domestic hot water supply, industrial waste heat replenishment, and agricultural greenhouse temperature control, and their performance directly determines the economic efficiency and practicality of solar energy utilization.

[0003] In civilian applications, solar thermal collectors can directly provide domestic hot water for homes, apartments, schools, etc., replacing traditional electric and gas heating methods. In the field of building heating, solar thermal collectors can be linked with ground source heat pumps, wall-mounted boilers, and other equipment to form a composite heating system, providing basic heat energy for buildings in winter and reducing reliance on coal-fired and gas-fired wall-mounted boilers. Especially in the clean heating renovation in northern regions, the application of solar thermal collectors can reduce carbon emissions from building heating.

[0004] Among existing solar thermal collectors, triangular structure collectors have found some application in small and medium-sized civilian and agricultural applications due to their relatively compact footprint and strong installation adaptability (e.g., they can be fitted to slopes or irregularly shaped building surfaces). However, in practical applications, it has been found that traditional triangular collectors suffer from significant inefficiency, making it difficult to meet the requirements of high-load thermal energy demand scenarios.

[0005] Traditional triangular solar collectors typically employ fixed-angle planar or linear arrangements for their core heat-absorbing components (such as absorber plates and collector tubes), and the angle between the hypotenuse and base of the triangular frame structure lacks dynamic adaptability. On one hand, due to the Earth's revolution and rotation, the solar altitude and azimuth angles change periodically with the seasons and day / night cycles. The fixed-angle heat-absorbing components cannot always maintain the optimal perpendicular angle to the incident sunlight, resulting in a significant amount of solar radiation being reflected and lost due to the excessively large angle of incidence. This is especially problematic in winter when the solar altitude is low, as the hypotenuse of the triangular collector surface easily forms a shadow, further reducing the effective light-receiving area.

[0006] Existing solar thermal collectors mostly use solar collector tubes to collect heat, but this method is relatively expensive.

[0007] Chinese patent application number CN202122818335.2 discloses a box-type solar collector, including a collector box with a right-angled triangular shape. A collector chamber is set inside the collector box, and a shelf is set inside the collector chamber. The inclined surface of the collector box is the light-facing surface, and a light-transmitting plate is covered on the light-facing surface to enclose the collector chamber. The outer surface of the collector box is equipped with heat-insulating components. This utility model can fully absorb sunlight and heat the collector chamber to rapidly increase the temperature inside the collector chamber. The high temperature can then be used to heat or dry materials, making it convenient to use. In addition, the overall structure is stable, the degree of automation is high, and the use effect is improved. However, the patent designates the inclined surface as the sun-facing surface. When the sun changes position, the fixed-angle sun-facing surface cannot maintain the optimal perpendicular angle with the incident sunlight, which will lead to the loss of solar radiation. Utility Model Content

[0008] The main technical problem to be solved by this utility model is to provide a high-efficiency solar thermal collector that has a simple overall structure, can improve the efficiency of solar thermal collection, make efficient use of solar energy, and improve the effect of use.

[0009] To solve the above-mentioned technical problems, this utility model provides the following technical solution: A high-efficiency solar thermal collector includes a housing, which is formed by a bottom plate, an upper inclined plate, and side plates fixedly connected end to end to form a triangular structure. A first transparent glass plate and a second transparent glass plate are respectively arranged in the middle of the upper inclined plate and the side plates. Multiple corrugated pipes arranged in a serpentine pattern are arranged on the bottom plate inside the housing. A bracket is fixedly connected to the end of the side plate away from the corrugated pipes, and a concentrating component is rotatably connected to the other end of the bracket. A concentrating concave mirror is arranged in the middle of the concentrating component.

[0010] The following are further optimizations of the above technical solution by this utility model: The base plate includes a square base plate frame, and an insulation board is fixedly installed in the middle of the base plate frame. The insulation board is made of color steel plate with phenolic resin inside.

[0011] Further optimization: The upper inclined plate includes an inclined plate frame that is fixedly connected to one side of the bottom plate frame and one side of the side plate, and the first transparent glass plate is fixedly installed at the middle position of the inclined plate frame.

[0012] Further optimization: The side panel includes a side panel frame that is fixedly connected to the other side of the bottom plate frame and one side of the inclined plate frame, and the second transparent glass plate is fixedly installed at the middle position of the side panel frame.

[0013] Further optimization: The bracket includes support rods fixedly installed at the four corners of the side plate frame. A first mounting plate is fixedly installed at the inner side of the end of each of the four support rods. A first sliding groove is opened on the two first mounting plates near the lower side, and a second sliding groove is opened on the two first mounting plates near the upper side.

[0014] Further optimization: The focusing component includes a reflective bracket rotatably connected to the first mounting plate.

[0015] Further optimization: The reflective bracket includes a bracket frame, and the concave focusing mirror is fixedly installed at the middle position of the bracket frame.

[0016] Further optimization: A second mounting plate is fixedly installed at each of the four outer corners of the reflector bracket, and the positions of the four second mounting plates are respectively matched with the four first mounting plates.

[0017] Further optimization: The two second mounting plates near the lower side are each provided with a fourth sliding groove corresponding to the first sliding groove, and the two second mounting plates near the upper side are each provided with a third sliding groove corresponding to the second sliding groove.

[0018] Further optimization: The first and fourth sliding grooves, as well as the second and third sliding grooves, are all set to be arc-shaped. The first and second sliding grooves are symmetrically arranged and their arc trajectories are located on the same diameter circumference. The second and third sliding grooves are arranged symmetrically, and their arc trajectories lie on the same diameter circumference.

[0019] This utility model adopts the above-mentioned technical solution, with ingenious design and reasonable structure, which can improve heat collection efficiency and solve the defects of traditional fixed angles. This device, through the cooperation of a rotatable concentrating component and a concentrating concave mirror, breaks through the limitation of the fixed angle of the heat-absorbing component in traditional triangular heat collection devices. When the solar altitude angle and azimuth angle change with the season or day and night, the angle of the concentrating component can be manually adjusted by loosening the nut, so that the concentrating concave mirror always maintains an appropriate angle with the direct sunlight, accurately concentrating the sunlight into the box, causing the internal temperature of the box to rise rapidly. After the corrugated pipe inside the box absorbs heat, it realizes rapid heat conduction and heating of the water inside the pipe, which greatly reduces the reflection loss of solar radiation caused by excessive incident angle. At the same time, it avoids the problem of shadow blocking of the inclined heat-absorbing surface when the solar altitude angle is low in winter, significantly improving the effective light-receiving area and solar energy utilization rate, and ensuring the use effect in high-load heat energy demand scenarios.

[0020] This device uses a triangular-structured box, adjustable concentrators, and built-in corrugated pipes to form the core solar collector system, replacing the traditional single-reliance solar collector tube system. The box serves as the core heat collection carrier, with an insulated base plate to reduce heat loss. Transparent glass panels on the upper and side plates ensure sunlight penetration, while rotatable concentrators and concave mirrors achieve precise light focusing. The built-in black corrugated pipes act as heat conduction components, leveraging the high light absorption properties of the black material to enhance heat absorption efficiency. The overall system, while ensuring high heat collection performance, significantly reduces overall manufacturing costs compared to traditional devices centered on expensive solar collector tubes. Furthermore, the corrugated pipes inside the box are secured to the base plate with clamps and quick-connect fittings at both ends, greatly simplifying the installation process and reducing construction and maintenance costs. This design effectively addresses the practical and economical needs of small to medium-sized applications such as domestic hot water supply, agricultural greenhouse temperature control, and small building heating.

[0021] The two sides of the box body use male and female connecting frames with spherical buckles, which can flexibly splice multiple devices to form a box group according to the actual heat collection load. After splicing, the same buckle is used to fix the sealing cover to ensure the airtightness of the heat collection chamber. At the same time, the corrugated pipes inside the box body can be quickly connected through the butt joint, which can expand the heat collection scale without complicated pipeline modification. It is suitable for the diverse needs of different scenarios such as domestic hot water supply, agricultural greenhouse temperature control, and small building heating, improving the versatility and flexibility of the device.

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure in an embodiment of the present utility model; Figure 2 This is an internal schematic diagram of the overall structure in an embodiment of this utility model; Figure 3 This is a schematic diagram of the structure of the light-concentrating component in an embodiment of this utility model.

[0024] In the diagram: 1. Box body; 11. Base plate; 110. Base plate frame; 111. Insulation board; 12. Upper inclined plate; 120. Inclined plate frame; 121. First transparent glass plate; 13. Side plate; 130. Side plate frame; 131. Second transparent glass plate; 2. Corrugated pipe; 3. Bracket; 31. Support rod; 32. First mounting plate; 33. First sliding groove; 34. Second sliding groove; 4. Concentrating component; 41. Reflecting bracket; 410. Bracket frame; 411. Second mounting plate; 412. Third sliding groove; 413. Fourth sliding groove; 42. Bolt; 43. Nut; 44. Concentrating concave mirror. Detailed Implementation

[0025] like Figure 1-3As shown: A high-efficiency solar thermal collector includes a housing 1. The housing 1 is formed by a bottom plate 11, an upper inclined plate 12 and a side plate 13 fixedly connected end to end to form a triangular structure. A first transparent glass plate 121 and a second transparent glass plate 131 are respectively provided in the middle of the upper inclined plate 12 and the side plate 13. Multiple corrugated pipes 2 arranged in a serpentine pattern are provided on the bottom plate 11 inside the housing 1. A bracket 3 is fixedly connected to one end of the side plate 13 away from the corrugated pipes 2. A concentrating component 4 is rotatably connected to the other end of the bracket 3. A concentrating concave mirror 44 is provided in the middle of the concentrating component 4.

[0026] The base plate 11 includes a square base plate frame 110, which is made of aluminum alloy to form a square frame.

[0027] An insulation board 111 is fixedly installed in the middle of the bottom plate frame 110. The insulation board 111 is made of color steel plate with phenolic resin inside.

[0028] The upper inclined plate 12 includes an inclined plate frame 120 that is fixedly connected to one side of the bottom plate frame 110 and one side of the side plate 13.

[0029] The slanted frame 120 is also made of aluminum alloy to form a square frame.

[0030] The first transparent glass plate 121 is fixedly installed at the middle position of the inclined plate frame 120.

[0031] The side plate 13 includes a side plate frame 130 that is fixedly connected to the other side of the bottom plate frame 110 and one side of the inclined plate frame 120.

[0032] The side panel frame 130 is also made of aluminum alloy to form a square frame.

[0033] The second transparent glass plate 131 is fixedly installed at the middle position of the side plate frame 130.

[0034] Both the first transparent glass plate 121 and the second transparent glass plate 131 are double-layered glass plates, which can improve the light transmission and heat preservation effect.

[0035] The multiple corrugated pipes 2 are evenly spaced on the base plate 11.

[0036] Multiple corrugated pipes 2 are fixedly installed to the base plate 11 by pipe clamps (not shown in the figure). The specific structure and installation method of the pipe clamps are known in the prior art and will not be described in detail here.

[0037] Both ends of the corrugated pipe 2 are equipped with connecting joints to facilitate quick connection of adjacent corrugated pipes 2.

[0038] The space between the base plate 11, the upper inclined plate 12 and the side plate 13 is a heat collection chamber, and the multiple corrugated pipes 2 are located in the heat collection chamber at the same time.

[0039] The two sides of the box 1 are respectively composed of a bottom plate frame 110, a sloping plate frame 120 and a side plate frame 130 forming a connecting frame.

[0040] The connecting frames on both sides of the housing 1 are a male connecting frame and a female connecting frame, respectively. The male connecting frame has a spherical buckle structure inside, and the outer surface of the female connecting frame has a slot that matches the spherical buckle.

[0041] This design allows multiple housings to be flexibly connected and combined according to actual heat collection needs. The operation is simple and efficient. After connection, the same type of buckle is used to fix and seal the end caps of the housing group, ensuring overall airtightness while meeting the requirements of modular use.

[0042] Meanwhile, multiple corrugated pipes 2 inside multiple housings 1 can be quickly connected through butt joints, making installation convenient.

[0043] The corrugated pipe 2 is black to ensure maximum solar energy absorption and improve the heat collection effect.

[0044] like Figure 2 As shown, the bracket 3 includes support rods 31 fixedly installed at the four corners of the side panel frame 130, and the support rods 31 are arranged perpendicular to the side panel frame 130.

[0045] The first mounting plate 32 is fixedly installed on the inner side of the ends of each of the four support rods 31.

[0046] The two first mounting plates 32 near the lower side are each provided with a first sliding groove 33, and the two first mounting plates 32 near the upper side are each provided with a second sliding groove 34.

[0047] like Figure 3 As shown, the focusing component 4 includes a reflective bracket 41 rotatably connected to the first mounting plate 32.

[0048] The reflective bracket 41 includes a bracket frame 410, which is also made of aluminum alloy.

[0049] The concave focusing mirror 44 is fixedly installed at the middle position of the bracket frame 410.

[0050] In this embodiment, the concave concentrator mirror 44 can be obtained commercially. The concave concentrator mirror 44 can reflect and concentrate sunlight from a large area onto a designated area (inside the box 1) to achieve centralized utilization of solar energy.

[0051] The shape of the reflector bracket 41 matches the concave condenser mirror 44, which facilitates the fixed installation of the concave condenser mirror 44. The fixed installation method of the concave condenser mirror 44 is known in the prior art and will not be described in detail here.

[0052] The second mounting plate 411 is fixedly installed at each of the four outer corners of the reflector bracket 41.

[0053] The positions of the four second mounting plates 411 are respectively matched with the four first mounting plates 32.

[0054] The two second mounting plates 411 near the lower side are each provided with a fourth sliding groove 413 corresponding to the first sliding groove 33, and the two second mounting plates 411 near the upper side are each provided with a third sliding groove 412 corresponding to the second sliding groove 34.

[0055] The first sliding groove 33 and the fourth sliding groove 413, the second sliding groove 34 and the third sliding groove 412 are all set to be arc-shaped. The first sliding groove 33 and the second sliding groove 34 are arranged symmetrically to each other and their arc-shaped trajectories are located on the same diameter circumference.

[0056] The second sliding groove 34 and the third sliding groove 412 are arranged symmetrically to each other, and their arc trajectories are located on the same diameter circumference.

[0057] Bolts 42 are inserted into the first sliding groove 33 and the fourth sliding groove 413, the second sliding groove 34 and the third sliding groove 412, and the threaded section of the bolt 42 passes through the corresponding sliding groove and forms a threaded connection with the nut 43.

[0058] The assembly structure achieves the tight fit and locking of the first mounting plate 32 and the second mounting plate 411 through the threaded engagement of the bolt 42 and the nut 43. At the same time, it utilizes the arc-shaped trajectory characteristics of the sliding groove to provide guidance for the angle adjustment of the focusing component 4, thus balancing connection stability and adjustment flexibility.

[0059] When the angle of direct sunlight changes, manually loosen nut 43 and rotate the concentrating component 4. Adjust the concentrating concave mirror 44 so that its mirror normal coincides with the direct sunlight, ensuring that the sunlight is accurately focused into the box 1 after being reflected by the concentrating concave mirror 44, thereby maximizing the utilization efficiency of solar energy.

[0060] In use, multiple units can be modularly assembled into a unit group by connecting the male and female frame frames (with spherical buckle structure) on both sides of the unit 1 as needed. The same buckle structure is used to fix the sealing cap at both ends of the unit group to ensure the airtightness of the heat collection chamber. The inlet and outlet ends of multiple corrugated pipes 2 are respectively passed through the sealing cap. The inlet end is connected to the cold water source through the butt joint, and the outlet end is connected to the heat-requiring equipment (such as heating system, hot water storage tank) through the butt joint. After cold water is introduced into the corrugated pipes 2, the nut 43 at the connection between the bracket 3 and the concentrating component 4 is loosened, and the concentrating component 4 is rotated to adjust the angle of the concentrating concave mirror 44 so that the sunlight is accurately focused into the unit 1 after reflection, which quickly increases the heat inside the unit 1. After the corrugated pipes 2 inside the unit 1 absorb the heat, the cold water inside the pipes is rapidly heated.

[0061] For those skilled in the art, any changes, modifications, substitutions, and variations made to the embodiments based on the teachings of this utility model, without departing from the principles and spirit of this utility model, still fall within the protection scope of this utility model.

Claims

1. A high-efficiency solar thermal collector, comprising a housing (1), characterized in that: The box (1) is fixedly connected end to end by a bottom plate (11), an upper inclined plate (12) and a side plate (13) to form a triangular structure. The middle part of the upper inclined plate (12) and the side plate (13) are respectively provided with a first transparent glass plate (121) and a second transparent glass plate (131). Multiple serpentine corrugated pipes (2) are provided on the bottom plate (11) inside the box (1). A bracket (3) is fixedly connected to one end of the side plate (13) away from the corrugated pipes (2). A light-concentrating component (4) is rotatably connected to the other end of the bracket (3). A light-concentrating concave mirror (44) is provided in the middle of the light-concentrating component (4).

2. The high-efficiency solar thermal collector according to claim 1, characterized in that: The base plate (11) includes a square base plate frame (110), and an insulation board (111) is fixedly installed in the middle of the base plate frame (110). The insulation board (111) is made of color steel plate with phenolic resin inside.

3. The high-efficiency solar thermal collector according to claim 2, characterized in that: The upper inclined plate (12) includes an inclined plate frame (120) fixedly connected to one side of the bottom plate frame (110) and one side of the side plate (13), and a first transparent glass plate (121) is fixedly installed at the middle position of the inclined plate frame (120).

4. The high-efficiency solar thermal collector according to claim 3, characterized in that: The side panel (13) includes a side panel frame (130) that is fixedly connected to the other side of the bottom plate frame (110) and one side of the inclined plate frame (120), and a second transparent glass plate (131) is fixedly installed at the middle position of the side panel frame (130).

5. A high-efficiency solar thermal collector according to claim 4, characterized in that: The bracket (3) includes support rods (31) fixedly installed at the four corners of the side plate frame (130). Each of the four support rods (31) has a first mounting plate (32) fixedly installed at the inner side of its end. The two first mounting plates (32) near the lower side are provided with a first sliding groove (33), and the two first mounting plates (32) near the upper side are provided with a second sliding groove (34).

6. A high-efficiency solar thermal collector according to claim 5, characterized in that: The focusing assembly (4) includes a reflective bracket (41) rotatably connected to the first mounting plate (32).

7. A high-efficiency solar thermal collector according to claim 6, characterized in that: The reflective bracket (41) includes a bracket frame (410), and a concave mirror (44) is fixedly installed at the middle position of the bracket frame (410).

8. A high-efficiency solar thermal collector according to claim 7, characterized in that: The four outer corners of the reflector bracket (41) are each fixedly installed with a second mounting plate (411), and the positions of the four second mounting plates (411) are respectively matched with the four first mounting plates (32).

9. A high-efficiency solar thermal collector according to claim 8, characterized in that: The two second mounting plates (411) near the lower side are each provided with a fourth sliding groove (413) corresponding to the first sliding groove (33), and the two second mounting plates (411) near the upper side are each provided with a third sliding groove (412) corresponding to the second sliding groove (34).

10. A high-efficiency solar thermal collector according to claim 9, characterized in that: The first sliding groove (33) and the fourth sliding groove (413), the second sliding groove (34) and the third sliding groove (412) are all set to be arc-shaped. The first sliding groove (33) and the second sliding groove (34) are arranged symmetrically to each other and their arc-shaped trajectories are located on the same diameter circumference. The second sliding groove (34) and the third sliding groove (412) are arranged symmetrically to each other, and their arc trajectories are located on the same diameter circumference.

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