Elastic self-locking quick heat-conducting heat pipe type solar medium temperature heat collector

Abstract

The application discloses a kind of elastic self-locking quick heat-conducting heat pipe type solar medium-temperature heat collector.It includes heat collecting single pipe and square header;Square header is located at the upper and lower ends of heat collecting single pipe;Sealing rubber ring is arranged at the connecting part of heat collecting single pipe upper end and square header;Circulating water pipe is arranged in square header;Heat collecting single pipe includes heated glass tube, metal heat-conducting pipe and outer cover glass tube;Heated glass tube is located in outer cover glass tube;Lower end of metal heat-conducting pipe is located in heated glass tube, upper end extends out of heated glass tube and is located in square header;Fin is arranged on metal heat-conducting pipe;Sealing rubber ring is arranged at the connecting part of outer cover glass tube and square header;Open end of sealing rubber ring is clamped on square header, closed end is tightly attached to outer wall of metal heat-conducting pipe.The application has the advantages of greatly reducing sensible heat of heat collector, improving heat collecting efficiency and fully transmitting mass and heat.

Description

Technical Field

[0001] The invention relates to an elastic, self-locking, fast-heat-conducting heat-pipe type solar medium-temperature collector. Background Art

[0002] Since the advent of solar vacuum tubes, solar thermal collectors (also known as water heaters) have been widely used in traditional hot water projects due to their high solar thermal absorption rate and low instantaneous emissivity, making significant contributions to the utilization of solar thermal energy. However, conventional vacuum tubes still present numerous challenges. Due to the low nighttime temperatures in northern China, water within the vacuum tubes can freeze and burst the glass tubes. Furthermore, the water paths between the vacuum tubes in conventional collectors are interconnected. If any vacuum tube in the system breaks, all circulating water will flow out of the system through the damaged point, causing the entire hot water project to fail.

[0003] Existing vacuum heat pipes, such as all-glass heat pipes, offer advantages: the entire heat collecting portion of the collector is water-free, enabling operation in cold regions without concern for tube bursts, and accidental tube damage does not affect system performance. However, existing heat pipe structures still present some challenges. For example, all-glass heat pipes rely solely on the glass for heat exchange, resulting in low efficiency. Metal plug-in heat pipes, due to their small contact area, are not conducive to mass and heat transfer, resulting in very inefficient mass and heat transfer.

[0004] Therefore, it is necessary to develop a solar medium-temperature collector with improved heat collection efficiency. Summary of the Invention

[0005] The purpose of the present invention is to provide a heat pipe type solar medium temperature collector with elastic self-locking and fast heat conduction. The heat collecting part of the entire collector is water-free and can work normally in cold areas without worrying about pipe bursting. It realizes the non-melting seal connection between the full-glass vacuum tube and the metal heat conducting tube, is easy to install on site, and accidental tube damage does not affect the normal operation of the system. The heat pipe type heat conducting tube structure is adopted to make the vacuum tube free of water, greatly reducing the sensible heat of the collector, improving the heat collection efficiency, and ensuring sufficient mass transfer and heat transfer; it effectively solves the defects of the existing technology of the heat pipe with a full-glass tube structure, in which the glass material undertakes the heat exchange function and has low efficiency, and the metal plug-in heat pipe has a small contact area, which is not conducive to mass transfer and heat transfer, and the mass transfer and heat transfer is very insufficient.

[0006] To achieve the above-mentioned object, the technical solution of the present invention is: an elastic self-locking fast heat-conducting heat pipe type solar medium-temperature collector, characterized by comprising a heat collecting single tube and a square header; the square header is located at the upper and lower ends of the heat collecting single tube; a sealing rubber ring is provided at the connection between the upper end of the heat collecting single tube and the square header;

[0007] The circulating water pipe is set in the square box;

[0008] The heat collecting single tube includes a heated glass tube, a metal heat conducting tube and an outer glass tube; the heated glass tube is located inside the outer glass tube; the lower end of the metal heat conducting tube is located inside the heated glass tube, and the upper end extends out of the heated glass tube and is located in the square header box;

[0009] Fins are provided on the metal heat conducting pipe;

[0010] A sealing rubber ring is provided at the connection between the outer cover glass tube and the square junction box; the open end of the sealing rubber ring is clamped on the square junction box, and the closed end is closely attached to the outer wall of the metal heat conduction tube.

[0011] There is only a small amount of alcohol or other volatile liquid in the circulating water pipe; the volatile liquid is located in the metal heat-conducting tube; when a single heat-collecting single tube is exposed to sunlight, the light heat is heated through the vacuum tube (heated glass tube), and the fins transfer the heat to the second metal heat-conducting tube part of the metal heat-conducting tube; after the second metal heat-conducting tube is heated, the temperature inside the tube cavity of the second metal heat-conducting tube rises, and the volatile liquid in the second metal heat-conducting tube vaporizes and rises to the first metal heat-conducting tube. When it encounters the relatively low-temperature circulating water pipe, the volatile gas condenses into liquid and flows along the wall of the first metal heat-conducting tube to the bottom of the second metal heat-conducting tube. Then it evaporates when heated in the second metal heat-conducting tube and condenses into liquid. This cycle allows for efficient heat collection and continuous generation of high-temperature water vapor.

[0012] In the above technical solution, the fins are made of thin aluminum fin groups.

[0013] In the above technical solution, the heated glass tube is fixed in the outer cover glass tube by a bracket.

[0014] In the above technical solution, there are multiple fins; the multiple fins are evenly distributed on the outer circumference of the metal heat pipe.

[0015] In the above technical solution, there are 2 to 4 fins.

[0016] In the above technical solution, the fin includes a first fin and a second fin; the first fin is arranged at the lower part of the metal heat conducting tube and is located inside the heated glass tube;

[0017] The second fin is located on the upper part of the metal heat conducting pipe and on the circulating water pipe in the square junction box.

[0018] In the above technical solution, the metal heat-conducting pipe includes a first metal heat-conducting pipe and a second metal heat-conducting pipe; the first metal heat-conducting pipe is located at the upper end of the second metal heat-conducting pipe, and the inner diameter of the first metal heat-conducting pipe is larger than the inner diameter of the second metal heat-conducting pipe;

[0019] The lower end of the first metal heat conducting pipe is smoothly connected to the upper end of the second metal heat conducting pipe;

[0020] The first metal heat conducting pipe is located in the square header; the second fin is located on the first metal heat conducting pipe and at the circulating water pipe;

[0021] The second metal heat-conducting tube is located in the heated glass tube; the first fin is located on the second metal heat-conducting tube; and the second metal heat-conducting tube is connected to the heated glass tube through the first fin.

[0022] In the above technical solution, the first fin is an arc-shaped structure; the first fin includes a first arc-shaped fin and a second arc-shaped fin; the first arc-shaped fin and the second arc-shaped fin are arranged at an interval, the first arc-shaped fin is located above the second arc-shaped fin, and the two side ends of the first arc-shaped fin are respectively connected to the two side ends of the second arc-shaped fin; the top of the second arc-shaped fin is provided with an opening;

[0023] The second fin has the same structure as the first fin.

[0024] The metal heat pipe is a cylindrical tube structure with unequal diameters and large aspect ratio, which is closed at the lower end and the upper end.

[0025] The volatile liquid is located in the metal heat conduction tube. There is a small amount of volatile liquid (such as alcohol) in the metal heat conduction tube to assist mass transfer and heat transfer.

[0026] The volatile liquid is located in the metal heat-conducting tube; when a single heat-collecting tube is exposed to sunlight, the light heat is heated through the outer glass tube, and the fins transfer the heat to the metal heat-conducting tube part; after the metal heat-conducting tube is heated, the temperature inside the tube cavity of the metal heat-conducting tube increases, and the volatile liquid in the metal heat-conducting tube vaporizes and rises to the metal heat-conducting tube. When it encounters a relatively low-temperature circulating water pipe, the gaseous volatile gas condenses into liquid and flows along the wall of the metal heat-conducting tube to the bottom of the metal heat-conducting tube, and then evaporates when heated and becomes liquid when condensed.

[0027] The present invention has the following advantages:

[0028] (1) The use of all-glass internal focusing eccentric vacuum tubes, thin aluminum fin groups, fins, metal heat pipes and other structures can efficiently collect heat and continuously generate high-temperature water vapor;

[0029] (2) The heat pipe type heat conduction pipe structure is adopted to eliminate water in the vacuum tube, which greatly reduces the sensible heat of the collector and improves the heat collection efficiency. The heat pipe type collector will become the preferred solution for the clean heating market in the north and will be widely used.

[0030] (3) A sealing rubber ring is installed at the connection between the upper end of the single heat collecting tube and the square junction box, which has good sealing performance, easy installation and maintenance, and high reliability, and realizes the non-melting seal connection between the all-glass vacuum tube and the metal heat conducting tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the longitudinal cross-sectional structure of the present invention.

[0032] Figure 2 It is a schematic diagram of the transverse cross-sectional structure of a single heat collecting tube in the present invention.

[0033] Figure 3 It is a structural schematic diagram of the first fin in the present invention.

[0034] Figure 4 It is a schematic cross-sectional structural diagram of the sealing rubber ring in the present invention.

[0035] Figure 5 It is a schematic diagram of the connection structure of the metal heat conducting pipe, fins and outer cover glass tube in the present invention.

[0036] In the figure, 2-sealing rubber ring, 3-outer glass tube, 4-heated glass tube, 5-metal heat conduction tube, 5.1-first metal heat conduction tube, 5.2-second metal heat conduction tube, 6-fin, 6.1-first fin, 6.1.1-first curved fin, 6.1.2-second curved fin, 6.2-second fin, 7-single heat collecting tube, 8-square header, 9-graphene coating, 11-circulating water pipe. DETAILED DESCRIPTION

[0037] The following detailed description of the embodiments of the present invention is given in conjunction with the accompanying drawings, which do not limit the present invention but are merely examples. The description makes the advantages of the present invention clearer and easier to understand.

[0038] Referring to the attached drawings, it can be seen that the elastic self-locking and fast heat-conducting heat pipe type solar medium-temperature collector includes a heat collecting single tube 7 and a square header 8; the square header 8 is located at the upper and lower ends of the heat collecting single tube 7; a sealing rubber ring 2 is provided at the connection between the upper end of the heat collecting single tube 7 and the square header 8;

[0039] The circulating water pipe 11 is arranged in the square coupling box 8;

[0040] The heat collecting single tube 7 includes a heated glass tube 4, a metal heat conducting tube 5 and an outer glass tube 3; the heated glass tube 4 is located inside the outer glass tube 3; the lower end of the metal heat conducting tube 5 is located inside the heated glass tube 4, and the upper end extends out of the heated glass tube 4 and is located in the square header 8;

[0041] Fins 6 are provided on the metal heat conducting pipe 5;

[0042] A sealing rubber ring 2 is provided at the connection between the outer cover glass tube 3 and the square header 8; the open end of the sealing rubber ring 2 is stuck on the square header 8, and the closed end is close to the outer wall of the metal heat conducting tube 5;

[0043] The graphene coating 9 is located on the inner wall of the outer cover glass tube 3 .

[0044] Furthermore, the fins 6 are made of thin aluminum fins.

[0045] Furthermore, the heated glass tube 4 is fixed in the outer cover glass tube 3 by a bracket; the vacuum tube (heated glass tube 4) of the present invention is a concentric ordinary tube, which is a non-eccentric tube;

[0046] There are multiple brackets, and the multiple brackets are arranged at intervals.

[0047] Furthermore, there are multiple fins 6 ; the multiple fins 6 are evenly distributed on the outer periphery of the metal heat pipe 5 .

[0048] Furthermore, there are 2 to 4 fins 6 .

[0049] Furthermore, the fin 6 includes a first fin 6.1 and a second fin 6.2;

[0050] The first fin 6.1 is arranged at the lower part of the metal heat conducting tube 5 and is located inside the heated glass tube 4;

[0051] The second fin 6 . 2 is located on the upper portion of the metal heat conducting tube 5 and on the circulating water pipe 11 in the square header 8 .

[0052] Furthermore, the metal heat-conducting pipe 5 includes a first metal heat-conducting pipe 5.1 and a second metal heat-conducting pipe 5.2; the first metal heat-conducting pipe 5.1 is located at the upper end of the second metal heat-conducting pipe 5.2, and the inner diameter of the first metal heat-conducting pipe 5.1 is larger than the inner diameter of the second metal heat-conducting pipe 5.2; the first metal heat-conducting pipe 5.1 and the second metal heat-conducting pipe 5.2 both use elastic self-locking fins, which function to conduct heat, self-lock, and automatically position;

[0053] The inner arc of the fin is the same as the outer arc of the metal heat pipe, which is automatically positioned. The radial fins are evenly distributed along the outer circle of the metal heat pipe, which plays an automatic locking function. The upper part of the fin is open and positioned in the axial direction. Because the two cantilever arcs at the opening are elastically deformed downward under radial force, they can be easily inserted into the inner wall of the vacuum tube by pinching them by hand. After insertion, the cantilever arcs of the fins automatically bounce upward and automatically adhere to the inner wall of the vacuum tube, which plays an elastic self-locking function.

[0054] The lower end of the first metal heat-conducting pipe 5.1 is smoothly connected to the upper end of the second metal heat-conducting pipe 5.2;

[0055] The first metal heat conducting pipe 5.1 is located in the square header 8; the second fin 6.2 is located on the first metal heat conducting pipe 5.1 and at the circulating water pipe 11;

[0056] The second metal heat-conducting tube 5.2 is located in the heated glass tube 4; the first fin 6.1 is located on the second metal heat-conducting tube 5.2; the second metal heat-conducting tube 5.2 is connected to the heated glass tube 4 through the first fin 6.1.

[0057] Furthermore, the first fin 6.1 is an arc-shaped structure; the first fin 6.1 includes a first arc-shaped fin 6.1.1 and a second arc-shaped fin 6.1.2; the first arc-shaped fin 6.1.1 and the second arc-shaped fin 6.1.2 are arranged at an interval, the first arc-shaped fin 6.1.1 is located above the second arc-shaped fin 6.1.2, and the two side ends of the first arc-shaped fin 6.1.1 are respectively connected to the two side ends of the second arc-shaped fin 6.1.2; the top of the second arc-shaped fin 6.1.2 is provided with an opening;

[0058] The second fin 6.2 has the same structure as the first fin 6.1.

[0059] Furthermore, the metal heat conducting pipe 5 is a cylindrical pipe structure with an unequal diameter and a large aspect ratio, which is closed at the lower end and the upper end.

[0060] The volatile liquid is located in the metal heat conducting pipe 5;

[0061] The volatile liquid is located within the metal heat pipe 5. When a single heat-collecting tube 7 is exposed to sunlight, the solar heat is heated through the vacuum tube (heated glass tube 4). The fins 6 transfer the heat to the second metal heat pipe 5.2 of the metal heat pipe 5. This heating causes the temperature within the lumen of the second metal heat pipe 5.2 to rise, causing the volatile liquid within the second metal heat pipe 5.2 to vaporize and rise to the first metal heat pipe 5.1. Upon encountering the relatively low-temperature circulating water pipe 11, the gaseous volatile gas condenses into liquid, flows along the wall of the first metal heat pipe 5.1, and flows to the bottom of the second metal heat pipe 5.2. There, it evaporates again under the heat of the second metal heat pipe 5.2 and condenses back into liquid form. This cycle allows for efficient heat collection and continuous generation of high-temperature water vapor.

[0062] Other parts not described belong to the prior art.

Claims

1. Elastic self-locking and fast heat-conducting heat pipe type solar medium temperature collector, characterized by: It comprises a heat collecting single tube (7) and a square header (8); the square header (8) is located at the upper and lower ends of the heat collecting single tube (7); a sealing rubber ring (2) is provided at the connection between the upper end of the heat collecting single tube (7) and the square header (8); The circulating water pipe (11) is arranged in the square coupling box (8); The heat collecting single tube (7) comprises a heated glass tube (4), a metal heat conducting tube (5) and an outer cover glass tube (3); the heated glass tube (4) is located inside the outer cover glass tube (3); the lower end of the metal heat conducting tube (5) is located inside the heated glass tube (4), and the upper end extends out of the heated glass tube (4) and is located inside the square header (8); Fins (6) are provided on the metal heat conducting pipe (5); A sealing rubber ring (2) is provided at the connection between the outer cover glass tube (3) and the square junction box (8); the open end of the sealing rubber ring (2) is clamped on the square junction box (8), and the closed end is closely attached to the outer wall of the metal heat conducting tube (5); The metal heat-conducting pipe (5) comprises a first metal heat-conducting pipe (5.1) and a second metal heat-conducting pipe (5.2); the first metal heat-conducting pipe (5.1) is located at the upper end of the second metal heat-conducting pipe (5.2), and the inner diameter of the first metal heat-conducting pipe (5.1) is larger than the inner diameter of the second metal heat-conducting pipe (5.2); The lower end of the first metal heat-conducting pipe (5.1) is smoothly connected to the upper end of the second metal heat-conducting pipe (5.2); The first metal heat-conducting pipe (5.1) is located in the square header (8); the second fin (6.2) is located on the first metal heat-conducting pipe (5.1) and at the circulating water pipe (11); The second metal heat-conducting tube (5.2) is located inside the heated glass tube (4); the first fin (6.1) is located on the second metal heat-conducting tube (5.2); the second metal heat-conducting tube (5.2) and the heated glass tube (4) are connected via the first fin (6.1); The first fin (6.1) is an arc-shaped structure; the first fin (6.1) comprises a first arc-shaped fin (6.1.1) and a second arc-shaped fin (6.1.2); the first arc-shaped fin (6.1.1) and the second arc-shaped fin (6.1.2) are arranged at intervals, and the first arc-shaped fin (6.1.1) is located between the second arc-shaped fin ( 6.1.2) and its two side ends are respectively connected to the two side ends of the second curved fin (6.1.2); an opening is set at the top of the second curved fin (6.1.2); The second fin (6.2) has the same structure as the first fin (6.1); The heated glass tube (4) is a vacuum tube; The inner arc of the fin is the same as the outer arc of the metal heat pipe, which is automatically positioned. The radial fins are evenly distributed along the outer circle of the metal heat pipe, which plays an automatic locking function. The upper part of the fin is open and positioned in the axial direction. Because the two cantilever arcs at the opening are elastically deformed downward under radial force, they can be easily inserted into the inner wall of the vacuum tube by pinching them with hands. After insertion, the cantilever arcs of the fins automatically bounce upward and automatically adhere to the inner wall of the vacuum tube, which plays an elastic self-locking function. The volatile liquid is located in the metal heat conducting tube (5); when a single heat collecting tube (7) is exposed to sunlight, the light heat is heated by the heated glass tube (4), and the fins (6) transfer the heat to the second metal heat conducting tube (5.2) of the metal heat conducting tube (5); after the second metal heat conducting tube (5.2) is heated, the temperature in the tube cavity of the second metal heat conducting tube (5.2) increases, and the volatile liquid in the second metal heat conducting tube (5.2) is vaporized and rises to the first metal heat conducting tube (5.1). When it encounters a relatively low temperature circulating water pipe (11), the gaseous volatile gas condenses into liquid and flows along the tube wall of the first metal heat conducting tube (5.1) to the bottom of the second metal heat conducting tube (5.2). Then, it is heated and evaporated in the second metal heat conducting tube (5.2), and condensed into liquid. This cycle is repeated to achieve rapid heat conduction and efficient heat collection, and continuously generate high-temperature water vapor. The vacuum tube is an all-glass inner focusing eccentric vacuum tube.

2. The elastic self-locking and fast heat-conducting heat pipe type solar medium-temperature collector according to claim 1 is characterized by: The fins (6) are thin aluminum fin groups.

3. The elastic self-locking and fast heat-conducting heat pipe type solar medium-temperature collector according to claim 1 or 2, characterized in that: There are multiple fins (6); the multiple fins (6) are evenly distributed on the outer periphery of the metal heat conduction pipe (5).

4. The elastic self-locking and fast heat-conducting heat pipe type solar medium-temperature collector according to claim 3 is characterized by: There are 2 to 4 fins (6).

5. The elastic self-locking and fast heat-conducting heat pipe type solar medium-temperature collector according to claim 4 is characterized in that: The fin (6) comprises a first fin (6.1) and a second fin (6.2); The first fin (6.1) is arranged at the lower part of the metal heat conducting tube (5) and is located inside the heated glass tube (4); The second fin (6.2) is located on the upper part of the metal heat conducting tube (5) and on the circulating water pipe (11) in the square header (8).

6. The elastic self-locking and fast heat-conducting heat pipe type solar medium-temperature collector according to claim 5 is characterized by: The metal heat conducting pipe (5) is a cylindrical pipe structure with an unequal diameter and a large aspect ratio, the lower end of the pipe being closed and the upper end also being closed.

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