A lightweight solar thermal collector

Abstract

This utility model discloses a lightweight solar thermal collector, belonging to the technical field of solar thermal equipment. The collector manifold of this device has mirrored reflectors arranged on its sides, distributed at the bottom and / or sides of the collector tubes. This utility model increases the light-collecting area through the light reflection of the mirrored reflectors, thereby reducing the number of collector tubes and the size of the internal casing of the collector manifold, thus achieving the goal of reducing the weight of the solar thermal collector without reducing the light-collecting area of ​​the collector tubes.

Description

Technical Field

[0001] This utility model relates to the field of solar thermal collector technology, and specifically discloses a lightweight solar thermal collector device. Background Technology

[0002] Solar thermal collectors are devices that convert solar radiation into heat energy. They are widely used in hot water supply, heating, industrial heating, and agriculture. With increasing global attention and demand for renewable energy, solar energy, as a clean and renewable energy source, is receiving increasing attention for its development and application. Future solar thermal collectors will be more efficient, intelligent, and economical, making a greater contribution to sustainable development and the green energy transition. The principle of solar thermal collection is to absorb solar radiation energy through a collector, convert it into heat energy, and then transfer the heat to the area requiring heating through a heat transfer medium.

[0003] To achieve a larger solar collector area, traditional solar collector manifolds employ a dense arrangement of vacuum collector tubes. This results in an overly dense arrangement, with the distance between adjacent tubes typically much smaller than their diameter. While this increases the collector area, the manifold requires numerous tubes, leading to a significant combined weight of the tubes themselves and their internal heat transfer medium, as well as the manifold itself and its internal medium. External or large-area installations pose certain safety hazards and hinder the advancement of lightweight and building-integrated solar collectors. Therefore, there is an urgent need to develop a lightweight solar collector to address these shortcomings. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model increases the light-collecting area by using a mirrored reflector to reflect light, thereby reducing the number of heat collection tubes and the size of the internal casing of the heat collection manifold, thus reducing the weight of the heat collection device without reducing the light-collecting area of ​​the heat collection tubes.

[0005] The technical solution adopted by this utility model is as follows: A lightweight solar thermal collector includes a heat collection manifold and a heat collection tube. One end of the heat collection tube is located inside the heat collection manifold. A mirror reflector is arranged on the side of the heat collection manifold. The mirror reflector is distributed on the lower part and / or side of the heat collection tube. Light is reflected onto the heat collection tube by the mirror reflector.

[0006] The connection between the solar collector manifold and the mirror reflector can be either fixed or detachable. For example, a mounting bracket can be installed on the solar collector manifold to fix the mirror reflector to it. The individual mirror reflectors can be designed as a single unit or arranged separately as needed.

[0007] A further improvement to this solution is that at least one side of the heat collection manifold is provided with a mounting hole, and a heat collection tube is connected in the mounting hole. The distance between adjacent mounting holes is greater than the diameter of the heat collection tube, thus reducing the number of heat collection tubes and reducing the weight. As for the spacing and position of the mounting holes, under the principle that the distance between the mounting holes is greater than the diameter of the heat collection tube, they are arranged according to actual needs, preferably with multiple heat collection tubes distributed at equal intervals.

[0008] When there are mounting holes on both sides of the heat collector header, the mounting holes on both sides are staggered. Since the opposite side of each mounting hole is the inner wall of the heat collector header, the insertion and removal allowance when installing the heat collector tube is half that of the existing heat collector header, and the staggered distribution of the mounting holes allows the width of the heat collector header to be half that of the existing heat collector header.

[0009] A further improvement to this design is that the length of the mirror reflector plate is consistent with the length of the heat collection tube between the heat collection manifold and the tail support.

[0010] The tail support can be designed according to requirements. For example, it can be fixed by opening a hole on the side of the housing, into which the mirror reflector and collector tubes are inserted. Alternatively, the mirror reflector and collector tubes can be directly fixed to the surface of the tail support. In practical applications, the tail support can be fixed to the ground with bolts, ensuring that the length of the tail support and the collector manifold matches the length of the mirror reflector and collector tubes.

[0011] Further improvements to this solution include the use of U-shaped, planar, V-shaped, or U-shaped mirror reflectors. Preferably, the mirror reflector is a U-shaped mirror reflector, which is distributed around the lower part and / or sides of the heat collector tube as its axis. More preferably, the U-shaped mirror reflectors are distributed around the lower part and sides of the corresponding heat collector tubes, and the cross-section of the U-shaped mirror reflector is a semi-circular cross-section that opens upwards; the length of the arc opening is equal to the axial distance between two adjacent heat collector tubes. The number of heat collector tubes is equal to the number of mirror reflectors, and they correspond one-to-one. By utilizing the characteristics of the U-shaped mirror reflector, this technical solution can reflect light onto the heat collector tube from multiple angles, increasing the amount of reflected light.

[0012] A further improvement to this design is the use of lightweight materials for the mirror reflector, such as aluminum plates, plastic reflective sheets with a metal coating, or portable polyester fiber reflectors. To prevent rain and snow accumulation on the reflector surface, a drainage outlet can be installed on the side of the reflector near the tailstock.

[0013] The advantages of this utility model compared with the prior art are:

[0014] (1) This utility model changes the traditional method of increasing heat collection by adding heat collection tubes, and instead adopts the method of adding a mirror reflector. The amount of light between the heat collection tubes is collected and reflected onto the heat collection tubes by the mirror reflector, increasing the light collection area. This can reduce the number of heat collection tubes while still ensuring heat collection efficiency, thereby achieving the purpose of reducing weight without reducing the light collection area.

[0015] This invention achieves the same light-gathering area and heat collection effect by reducing the number of heat collector tubes installed in the heat collector manifold, thereby reducing the weight of the heat collector tubes themselves and the internal heat transfer medium. Due to the reduced number of heat collector tubes, sufficient space can be provided between them. When heat collector tubes are installed on both sides, their staggered distribution allows the opposite sides of the heat collector tube mounting holes to be the inner wall of the heat collector manifold. The insertion and removal allowance during heat collector tube installation can be half that of existing heat collector manifolds, thus reducing the width of the heat collector manifold by half, thereby achieving the effect of reducing the width of the heat collector manifold and the weight of the internal medium.

[0016] The reduced weight decreases safety hazards associated with external or large-area installations, and promotes the lightweighting and building integration of solar thermal collectors. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram showing the positional relationship between the heat collection manifold and the heat collection tube tail support of this utility model;

[0019] Figure 3 for Figure 2 A magnified view of the structure at point A in the middle;

[0020] Figure 4 This is a schematic diagram showing the connection relationship between the heat collection tube and the mirror reflector of this utility model;

[0021] Figure 5 for Figure 4 A magnified schematic diagram of the structure at point B in the middle;

[0022] Figure 6 This is a schematic diagram of the overall structure of Embodiment 3 of this utility model;

[0023] 1-Heat collector manifold; 2-Tail support; 3-Water inlet; 4-Heat collector tube; 5-Mirror reflector; 6-Water outlet; 7-Mounting hole. Detailed Implementation

[0024] The technical solution of this utility model will be further explained below with reference to specific embodiments.

[0025] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this patent. To better illustrate the embodiments of this utility model, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0026] Example 1:

[0027] A lightweight solar thermal collector has a mirrored reflector 5 arranged on the side of the collector manifold 1, and the mirrored reflector 5 is distributed on the lower part and / or side of the collector tube 4.

[0028] The amount of light between the heat collection tubes is collected and reflected onto the heat collection tubes by the mirror reflector, which increases the light collection area. This can reduce the number of heat collection tubes while still ensuring the amount of heat collected, thus achieving the effect of reducing the number of heat collection tubes without reducing the light collection area.

[0029] Example 2:

[0030] Based on Embodiment 1, the heat collection manifold 1 has mounting holes 7 on both sides, and the mounting holes on both sides are staggered. The distance between adjacent mounting holes 7 is greater than the diameter of the heat collection tube; the length of the mirror reflector 5 is consistent with the length of the heat collection tube 4 between the heat collection manifold 1 and the tail support 2. The mirror reflector 5 is a U-shaped mirror reflector 5, and each U-shaped mirror reflector is distributed on the lower part and both sides of the heat collection tube 4 with the corresponding heat collection tube 4 as the axis.

[0031] The mirror reflector 5 is a reflector made of lightweight material.

[0032] The working principle of this utility model is as follows:

[0033] As attached Figure 1-5 As shown, one end of the heat collection tube is connected to the heat collection manifold through the mounting hole, and the other end is fixed to the tail support 2; one end of the U-shaped mirror reflector 5 is fixed to the side of the heat collection manifold, and the other end is fixed to the tail support 2. The end of the heat collection manifold is provided with an inlet 3 and an outlet 6.

[0034] During operation, water is injected into the heat collector manifold 1 through inlet 3, and then the water enters the heat collector tube 4 of the heat collector manifold 1. On one hand, the heat collector tube 4 collects heat itself, and on the other hand, the U-shaped mirror reflector 5 collects and reflects light from both sides of the heat collector tube 4. The hot water in the heat collector tube 4 collects into the heat collector manifold 1, and then enters the connected hot water storage tank through the heat collector manifold outlet 6. Makeup water is supplied to the heat collector tube 4 through the inlet 3 at the bottom of the heat collector manifold.

[0035] This invention increases the light-receiving area by adding a U-shaped mirror reflector, thereby reducing the number of heat collection tubes 4 without reducing the heat collection area. Simultaneously, since the mounting holes 7 are opposite the inner wall of the heat collection manifold 1, the insertion / removal allowance for the heat collection tubes 4 during installation can be half that of existing heat collection manifolds, thus achieving an internal width of the heat collection manifold 1 that is half the size of a conventional manifold. This reduces the weight of the heat collection manifold 1 and the weight of the medium inside the manifold. Therefore, without changing the overall installation method and shape, this new lightweight heat collection device achieves the same heat collection area, comparable heat collection effect, and a weight reduction of nearly 50%.

[0036] Example 3:

[0037] As attached Figure 6 As shown, unlike Embodiment 2, the side of the heat collection manifold 1 has a mounting hole 7 on one side.

[0038] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. The scope of this invention is defined by the appended claims rather than the foregoing description. Therefore, it is intended to encompass all variations falling within the meaning and scope of equivalents of the claims within this invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A lightweight solar thermal collector, comprising a collector manifold (1), characterized in that: The heat collection manifold (1) is provided with a mirror reflector (5) on its side. The mirror reflector (5) is distributed on the lower part and / or side of the heat collection tube (4). The heat collection manifold (1) has at least one mounting hole (7) on its side, and the distance between adjacent mounting holes (7) is greater than the diameter of the heat collection tube; when there are mounting holes (7) on both sides of the heat collection manifold (1), the mounting holes on both sides are staggered.

2. The lightweight solar thermal collector according to claim 1, characterized in that: The length of the mirror reflector (5) is the same as the length of the heat collection tube (4) between the heat collection manifold (1) and the tail support (2).

3. The lightweight solar thermal collector according to claim 1, characterized in that: The mirror reflector (5) is a U-shaped mirror reflector (5), and each U-shaped mirror reflector is distributed on the lower part and both sides of the heat collector (4) with the corresponding heat collector (4) as the axis; U-shaped mirror reflectors are distributed around the lower part and both sides of the corresponding heat collection tubes. The cross-section of the U-shaped mirror reflector is a semi-circle with an upward opening. The opening length of the arc is equal to the center distance between two adjacent heat collection tubes. The number of heat collection tubes is equal to the number of mirror reflectors, and they correspond one-to-one.

4. The lightweight solar thermal collector according to claim 1, characterized in that: The mirror reflector (5) is a lightweight material reflector.

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