Heat exchange sleeve pipe for preventing solar vacuum heat collecting pipe from being broken due to icing

Abstract

The utility model discloses a kind of heat exchange sleeve pipes for preventing solar vacuum heat collecting tube icing break, including heat exchange sleeve pipe, the heat exchange sleeve pipe is inserted and is installed at solar water storage tank interface, the heat exchange fin is arranged at the outer periphery of the heat exchange sleeve pipe, the solar vacuum heat collecting tube is inserted and is installed in the heat exchange sleeve pipe, the elastic contact heat conduction component is arranged between the heat exchange sleeve pipe and the solar vacuum heat collecting tube, solar vacuum heat collecting tube outside sleeve connection heat exchange sleeve pipe is inserted into solar water storage tank in the utility model, heat absorbed by solar vacuum heat collecting tube is indirectly transferred to water in solar water storage tank by heat exchange sleeve pipe, realize efficient heat exchange, since solar vacuum heat collecting tube does not need to fill water, completely avoid solar vacuum heat collecting tube breakage problem caused by icing, ensure the reliable stability of solar vacuum heat collecting tube.

Description

Technical Field

[0001] This utility model belongs to the field of solar vacuum collector tube technology, specifically relating to a heat exchange sleeve to prevent solar vacuum collector tubes from freezing and cracking. Background Technology

[0002] Solar water heaters, as a clean energy application device, have been widely used. Their core components include vacuum collector tubes and water storage tanks. Currently, the vacuum collector tubes and water storage tanks adopt a direct connection structure, that is, the vacuum tubes are directly inserted into the inner tank of the water tank, so that the cavity inside the vacuum tubes is connected to the inner cavity of the water tank and filled with water. After absorbing solar radiation, the vacuum tubes directly heat the water inside the tubes, and rely on the natural convection circulation of hot and cold water (thermosiphon effect) to carry the heat into the water tank.

[0003] However, the direct connection structure of the vacuum collector tube and the water storage tank has the problem of freezing in winter. When the ambient temperature is below the freezing point, the vacuum collector tube and the low temperature water at the tube opening freeze first. The huge expansion stress generated by the freezing directly acts on the glass wall of the vacuum collector tube, causing the vacuum collector tube to crack. To this end, we propose a heat exchange sleeve to prevent the solar vacuum collector tube from freezing and cracking. Utility Model Content

[0004] The purpose of this invention is to provide a heat exchange sleeve to prevent solar vacuum collector tubes from freezing and cracking, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a heat exchange sleeve for preventing the ice formation and cracking of solar vacuum collector tubes, comprising: A heat exchange sleeve is inserted and installed at the interface of the solar water storage tank. Heat exchange fins are disposed on the outer periphery of the heat exchange sleeve; A solar vacuum collector tube, wherein the solar vacuum collector tube is inserted and installed inside the heat exchange sleeve; An elastic contact heat-conducting component is disposed between the heat exchange sleeve and the solar vacuum collector tube.

[0006] Preferably, the open end of the heat exchange sleeve is provided with a mounting flange, which is installed at the interface of the solar water storage tank by bolts.

[0007] Preferably, a silicone sealing ring is provided at the interface between the mounting flange and the solar water storage tank.

[0008] Preferably, the heat exchange fins are annular or spiral fins.

[0009] Preferably, the heat exchange sleeve, the heat exchange fins, and the mounting flange are integrally formed.

[0010] Preferably, the elastic contact heat-conducting assembly includes an elastic contact heat-conducting end, an elastic contact heat-conducting vertical plate, and an elastic contact heat-conducting fixing ring; The elastic contact heat-conducting end is located at the bottom of the heat exchange sleeve corresponding to the insertion end of the solar vacuum collector tube. The elastic contact heat-conducting vertical plates are arranged in a ring at equal intervals on the inner wall of the heat exchange sleeve corresponding to the outer periphery of the solar vacuum collector tube. The elastic contact heat-conducting fixing ring is located at the outer end of the elastic contact heat-conducting vertical plates.

[0011] Preferably, the elastic contact heat-conducting end, the elastic contact heat-conducting vertical plate, and the elastic contact heat-conducting fixing ring are integrally molded structures of heat-conducting rubber.

[0012] Preferably, the outer end interfaces of the heat exchange sleeve and the solar vacuum collector tube are coated with high-temperature resistant adhesive.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. In this utility model, a heat exchange sleeve is attached to the outside of the solar vacuum collector tube and inserted into the solar water storage tank. The heat absorbed by the solar vacuum collector tube is indirectly transferred to the water in the solar water storage tank through the heat exchange sleeve, thereby achieving efficient heat exchange. Since the solar vacuum collector tube does not need to be filled with water, the problem of solar vacuum collector tube cracking due to freezing is completely avoided, ensuring the reliable stability of the solar vacuum collector tube. 2. In this utility model, annular or spiral heat exchange fins are provided on the outer periphery of the heat exchange sleeve. The heat exchange fins greatly increase the heat exchange area and improve the efficiency of heat transfer from the solar vacuum collector tube to the water in the solar water storage tank, thereby achieving efficient heat exchange. 3. In this utility model, an elastic contact heat conduction component is provided between the heat exchange sleeve and the solar vacuum collector tube. The elastic contact heat conduction end, the elastic contact heat conduction vertical plate and the elastic contact heat conduction fixing ring achieve close contact between the heat exchange sleeve and the solar vacuum collector tube and ensure the heat conduction and heat exchange effect. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model; Figure 2 This is a schematic diagram of the overall three-dimensional structure of this utility model; Figure 3 This is a schematic diagram of the main structure of this utility model; Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure along the AA direction; Figure 5 for Figure 3 Schematic diagram of the structure in the middle BB direction; Figure 6 This is a partial three-dimensional structural schematic diagram of the present invention; Figure 7 This is a partial cross-sectional perspective view of the three-dimensional structure of this utility model.

[0015] In the diagram: 1. Heat exchange sleeve; 2. Heat exchange fins; 3. Solar vacuum collector tube; 4. Elastic contact heat conduction component; 401. Silicone sealing ring; 402. Elastic contact heat conduction vertical plate; 403. Elastic contact heat conduction fixing ring; 5. Mounting flange; 6. Silicone sealing ring. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figures 1-7 The heat exchange sleeve for preventing icing and cracking of solar vacuum collector tubes provided by this utility model includes: Heat exchanger sleeve 1 is inserted and installed at the interface of the solar water storage tank. Heat exchange fins 2 are arranged on the outer periphery of heat exchange sleeve 1, and heat exchange fins 2 are annular or spiral fins. The solar vacuum collector tube 3 is inserted and installed inside the heat exchange sleeve 1. The elastic contact heat-conducting component 4 is disposed between the heat exchange sleeve 1 and the solar vacuum collector tube 3. The elastic contact heat-conducting component 4 includes an elastic contact heat-conducting end 401, an elastic contact heat-conducting vertical plate 402, and an elastic contact heat-conducting fixing ring 403. The elastic contact heat-conducting end 401 is disposed at the bottom of the heat exchange sleeve 1 corresponding to the insertion end of the solar vacuum collector tube 3. The elastic contact heat-conducting vertical plate 402 is disposed in a ring at equal intervals on the inner wall of the heat exchange sleeve 1 corresponding to the outer periphery of the solar vacuum collector tube 3. The elastic contact heat-conducting fixing ring 403 is disposed at the outer end of the elastic contact heat-conducting vertical plate 402. The elastic contact heat-conducting end 401, the elastic contact heat-conducting vertical plate 402, and the elastic contact heat-conducting fixing ring 403 are integrally molded structures of heat-conducting rubber.

[0018] In this utility model, the outer side of the solar vacuum collector tube 3 is fitted with a heat exchange sleeve 1 and inserted into the solar water storage tank. The heat absorbed by the solar vacuum collector tube 3 is indirectly transferred to the water in the solar water storage tank through the heat exchange sleeve 1, thereby achieving efficient heat exchange. Since the solar vacuum collector tube 3 does not need to be filled with water, the problem of solar vacuum collector tube rupture due to freezing is completely avoided, ensuring the reliable stability of the solar vacuum collector tube. In this invention, annular or spiral heat exchange fins 2 are provided on the outer periphery of the heat exchange sleeve 1. The heat exchange fins 2 greatly increase the heat exchange area and improve the efficiency of heat transfer from the solar vacuum collector tube 3 to the water in the solar water storage tank, thereby achieving efficient heat exchange. In this invention, an elastic contact heat-conducting component 4 is provided between the heat exchange sleeve 1 and the solar vacuum collector tube 3. The elastic contact heat-conducting end 401, the elastic contact heat-conducting vertical plate 402 and the elastic contact heat-conducting fixing ring 403 achieve close contact between the heat exchange sleeve 1 and the solar vacuum collector tube 3 and ensure the heat conduction and heat exchange effect.

[0019] In this embodiment, as Figure 1 and Figure 2 As shown, the open end of the heat exchange sleeve 1 is provided with an installation flange 5. The installation flange 5 is installed at the interface of the solar water storage tank by bolts to achieve a firm installation of the heat exchange sleeve 1. A silicone sealing ring 6 is provided at the interface of the installation flange 5 and the solar water storage tank to ensure the connection is sealed.

[0020] In this embodiment, as Figure 1 As shown, the heat exchanger sleeve 1, heat exchanger fins 2 and mounting flange 5 are integrally formed, which improves the structural strength.

[0021] In this embodiment, the outer end interfaces of the heat exchange sleeve 1 and the solar vacuum collector tube 3 are coated with high-temperature resistant adhesive to ensure the connection and sealing of the heat exchange sleeve 1 and the solar vacuum collector tube 3.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heat exchange sleeve for preventing icing and cracking of solar vacuum collector tubes, characterized in that, include: Heat exchange sleeve (1), the heat exchange sleeve (1) is inserted and installed at the interface of the solar water storage tank; Heat exchange fins (2), the heat exchange fins (2) are disposed on the outer periphery of the heat exchange sleeve (1); A solar vacuum collector tube (3) is inserted into the heat exchange sleeve (1); The elastic contact heat conduction component (4) is disposed between the heat exchange sleeve (1) and the solar vacuum collector tube (3).

2. The heat exchange sleeve for preventing icing and cracking of solar vacuum collector tubes according to claim 1, characterized in that: The heat exchange sleeve (1) is provided with an installation flange (5) at its open end, and the installation flange (5) is installed at the interface of the solar water storage tank by bolts.

3. A heat exchange sleeve for preventing icing and cracking of solar vacuum collector tubes according to claim 2, characterized in that: A silicone sealing ring (6) is provided at the interface of the mounting flange (5) and the solar water storage tank.

4. A heat exchange sleeve for preventing icing and cracking of solar vacuum collector tubes according to claim 1, characterized in that: The heat exchange fins (2) are annular or spiral fins.

5. A heat exchange sleeve for preventing icing and cracking of solar vacuum collector tubes according to claim 2, characterized in that: The heat exchange sleeve (1), the heat exchange fins (2), and the mounting flange (5) are integrally formed.

6. A heat exchange sleeve for preventing icing and cracking of solar vacuum collector tubes according to claim 1, characterized in that: The elastic contact heat conduction assembly (4) includes an elastic contact heat conduction end (401), an elastic contact heat conduction vertical plate (402), and an elastic contact heat conduction fixing ring (403). The elastic contact heat-conducting end (401) is located at the bottom of the heat exchange sleeve (1) corresponding to the insertion end of the solar vacuum collector tube (3). The elastic contact heat-conducting vertical plate (402) is arranged in a ring at equal intervals on the inner wall of the heat exchange sleeve (1) corresponding to the outer periphery of the solar vacuum collector tube (3). The elastic contact heat-conducting fixing ring (403) is located at the outer end of the elastic contact heat-conducting vertical plate (402).

7. A heat exchange sleeve for preventing icing and cracking of solar vacuum collector tubes according to claim 6, characterized in that: The elastic contact heat-conducting end (401), the elastic contact heat-conducting vertical plate (402), and the elastic contact heat-conducting fixing ring (403) are integrally molded structures of heat-conducting rubber.

8. A heat exchange sleeve for preventing icing and cracking of solar vacuum collector tubes according to claim 1, characterized in that: The outer end interfaces of the heat exchange sleeve (1) and the solar vacuum collector tube (3) are coated with high-temperature resistant adhesive.

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