A solar light and heat pipe collector

Abstract

The application relates to a solar light and heat pipe collector. The collector comprises a rack, a mounting box is fixedly arranged at the top of the rack, a plurality of heating mechanisms are throughly arranged on one side of the mounting box, the heating mechanism comprises a vacuum tube which is throughly arranged in the mounting box and detachably connected with the mounting box, the bottom of the vacuum tube is provided with a sealing head, the top of the vacuum tube is detachably provided with a blocking head, the blocking head is throughly and detachably provided with a heat pipe element, and the heat pipe element comprises an evaporation section and a condensation section. The collector can reduce the contact thermal resistance through the bidirectional heat deformation cooperation of the heat exchange round box and the elastic spiral conduction plate, the spiral structure increases the heat dissipation area, and the heat exchange effect is strengthened; the elastic spiral conduction plate is driven to scrape and remove dirt by pressing the pressing ring, the components need not be disassembled, and the operation is convenient; the heat is efficiently and centrally conducted to the evaporation section through the semicircular part and the arc part of the heat conduction plate, the heat absorption efficiency is improved, the overall structure is compact, and assembly and maintenance are facilitated.

Description

Technical Field

[0001] This application relates to the field of solar collector technology, and in particular to a solar thermal tube collector. Background Technology

[0002] Currently, solar thermal pipe collectors are widely used in hot water supply and heating. Their basic structure typically includes a frame, a mounting box, and multiple vacuum tubes inserted into the mounting box. Heat pipes are installed inside the vacuum tubes; the evaporation section of the heat pipes is located inside the vacuum tubes to absorb solar heat, while the condensation section extends into a flow channel inside the mounting box, transferring solar energy to the medium flowing through the box. To increase the heat exchange area, some existing collectors have added fins or other heat-conducting structures to the outside of the condensation section to improve heat transfer efficiency.

[0003] However, the condenser section of the heat pipe is in direct contact with the medium in the flow channel, resulting in a limited heat exchange area. Furthermore, the finned or spiral heat conduction structure is mostly rigidly fixed. After long-term operation, impurities in the water flow in the flow channel easily form scale on the surface of the heat exchange components. The attached scale layer further increases the thermal resistance and severely weakens the heat exchange performance. Moreover, the heat exchange components of existing collectors are mostly sealed and fixed inside the flow channel, making it difficult to clean and maintain them conveniently. Even if some products have inspection ports, it is necessary to shut down the machine and disassemble a large number of components to carry out descaling operations. This is cumbersome and costly, affecting the long-term stable operation and energy efficiency of the equipment. Therefore, this application proposes a solar thermal tube collector. Summary of the Invention

[0004] Based on this, it is necessary to provide a solar thermal tube collector to address the above-mentioned technical problems. The collector includes a frame, with an installation box fixedly installed on the top of the frame. Multiple heating mechanisms are installed through one side of the installation box. Each heating mechanism includes a vacuum tube that passes through the installation box and is detachably connected to it. The bottom of the vacuum tube is sealed, and a sealing head is detachably installed on the top of the vacuum tube. A heat pipe component is detachably installed through the sealing head. The heat pipe component includes an evaporation section and a condensation section, with the evaporation section located inside the vacuum tube. A heat exchange mechanism is fixedly installed through the mounting box. The heat exchange mechanism includes two side tubes and a middle tube fixedly connected between them. The middle tube is provided with multiple coaxial cylindrical parts one and two. The same heat exchange box is fixedly installed through the coaxial cylindrical parts one and two. The bottom of the middle tube is open. The condensing section extends into the heat exchange box. The heat exchange box is used to contain the heat transfer medium to conduct the heat of the condensing section to the middle tube. An elastic spiral conductive plate located inside the intermediate tube is slidably sleeved on the heat exchange box. The bottom end of the elastic spiral conductive plate is fixedly connected to the bottom inner wall of the cylindrical part. An annular block slidably sleeved on the heat exchange box is fixedly installed on the top end of the elastic spiral conductive plate. The elastic spiral conductive plate is configured to radially contract to abut against the outside of the heat exchange box when heated, and to axially compress and deform when the annular block is driven by an external force.

[0005] Preferably, a plurality of guide rods arranged in a circumferential array are fixedly installed on the top of the annular block. The plurality of guide rods all pass through the cylindrical part and are slidably connected to the cylindrical part. The ends of the plurality of guide rods away from the annular block are fixedly installed with the same pressure ring.

[0006] Preferably, a sealing ring is detachably installed at the bottom of the intermediate tube, and the sealing ring is detachably sleeved on the condensing section, with a sealed connection between the condensing section and the sealing ring.

[0007] Preferably, the top of the heat exchanger is provided with a filling port, and a plug plate is detachably installed inside the filling port.

[0008] Preferably, the space between the heat exchanger and the condenser section is filled with heat-conducting oil.

[0009] Preferably, the vacuum tube is provided with two heat-conducting plates inside. Each heat-conducting plate includes an arc-shaped portion fitted and sleeved on the outside of the evaporation section. Both sides of the arc-shaped portion are provided with semi-circular portions, and both semi-circular portions are fitted and abutted against the inner wall of the vacuum tube.

[0010] Preferably, the mounting box has an inspection port, and a cover plate is detachably installed inside the inspection port.

[0011] Preferably, the frame is detachably mounted with multiple carriers, and the bottom ends of the multiple vacuum tubes are respectively installed in the corresponding carriers.

[0012] Preferably, the mounting box has multiple mounting holes on the side away from the inspection port, and a sealing ring is fixedly installed in each of the multiple mounting holes. The multiple vacuum tubes pass through the sealing rings in the corresponding mounting holes and are sealed to them.

[0013] Compared with the prior art, the beneficial effects of the present invention are: This invention utilizes a heat exchange cylindrical box and an elastic spiral conductive plate. The condensing section extends into the heat exchange cylindrical box, and heat is evenly transferred to the box via heat transfer oil, avoiding uneven heat exchange caused by direct contact between the condensing section and the medium. The elastic spiral conductive plate contracts radially when heated, while the heat exchange cylindrical box expands radially; this bidirectional thermal deformation reduces contact thermal resistance. The spiral structure increases the heat dissipation area and extends the medium flow path, enhancing the heat exchange effect.

[0014] This invention uses an annular block, a guide rod, and a pressure ring. Pressing the pressure ring pushes the annular block to compress the elastic spiral conductive plate, causing its inner edge to scrape the outer wall of the heat exchanger box to remove scale. At the same time, its own twisting deformation causes the surface deposits to fall off. After being released, it elastically resets. Pressing repeatedly several times can complete the descaling process without disassembling the heat exchange components, making it easy to operate.

[0015] This invention features a heat-conducting plate with its arc-shaped portion fitted around the outside of the evaporation section and its two semi-circular portions fitting against the inner wall of the vacuum tube. This efficiently and centrally conducts heat to the evaporation section. The symmetrical clamping of the two semi-circular portions ensures good contact and improves heat absorption efficiency. All components are detachably connected, resulting in a compact structure that facilitates assembly and maintenance, and ensures long-term stable operation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a solar thermal tube collector in one embodiment. Figure 1 ; Figure 2 This is a schematic diagram of the overall structure of a solar thermal tube collector in one embodiment. Figure 2 ; Figure 3 This is a perspective side sectional view of a solar thermal tube collector in one embodiment; Figure 4 This is a schematic diagram of the heat exchange mechanism and multiple heating mechanisms in a solar thermal tube collector according to one embodiment; Figure 5 A three-dimensional side section of the heating mechanism in a solar thermal tube collector according to one embodiment. Figure 1 ; Figure 6 This is a schematic diagram of the structure of a heat pipe component in a solar thermal pipe collector according to one embodiment; Figure 7 A three-dimensional side section of the heating mechanism in a solar thermal tube collector according to one embodiment. Figure 2 ; Figure 8 This is a three-dimensional side sectional view of the heating mechanism and heat exchange mechanism in a solar thermal tube collector according to one embodiment; Figure 9 for Figure 8 An enlarged schematic diagram of part A in the middle.

[0017] In the diagram: 1. Frame; 2. Mounting box; 3. Heating mechanism; 4. Heat exchange mechanism; 5. Carrier; 21. Inspection port; 22. Cover plate; 23. Mounting hole; 31. Vacuum tube; 32. Sealing head; 33. Heat pipe fitting; 331. Evaporation section; 332. Condensation section; 34. Heat conduction plate; 341. Semicircular part; 342. Arc-shaped part; 41. Side tube; 42. Middle tube; 421. Cylindrical section one; 422. Cylindrical section two; 43. Heat exchanger box; 44. Sealing ring; 45. Filling port; 46. Plug plate; 47. Annular block; 48. Elastic spiral conduction plate; 49. Guide rod; 410. Pressure ring. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0019] Please refer to Figures 1-9 The present invention provides a technical solution: a solar thermal tube collector, including a frame 1, an installation box 2 fixedly installed on the top of the frame 1, a plurality of heating mechanisms 3 through installed on one side of the installation box 2, the heating mechanism 3 including a vacuum tube 31 through the installation box 2 and detachably connected to the installation box 2, the bottom of the vacuum tube 31 is sealed, the top of the vacuum tube 31 is detachably installed with a sealing head 32, a heat pipe component 33 through detachably installed on the sealing head 32, the heat pipe component 33 including an evaporation section 331 and a condensation section 332, the evaporation section 331 being located inside the vacuum tube 31; A heat exchange mechanism 4 is fixedly installed through the mounting box 2. The heat exchange mechanism 4 includes two side pipes 41 and an intermediate pipe 42 fixedly connected between them. The intermediate pipe 42 is provided with multiple coaxial cylindrical parts 421 and 422. The same heat exchange box 43 is fixedly installed through the coaxial cylindrical parts 421 and 422. The bottom of the intermediate pipe 42 is open. The condensing section 332 extends into the heat exchange box 43. The heat exchange box 43 is used to contain the heat transfer medium to conduct the heat of the condensing section 332 to the intermediate pipe 42. An elastic spiral conductive plate 48 located inside the intermediate tube 42 is slidably sleeved on the heat exchange box 43. The bottom end of the elastic spiral conductive plate 48 is fixedly connected to the bottom inner wall of the cylindrical part 421. An annular block 47 slidably sleeved on the heat exchange box 43 is fixedly installed on the top end of the elastic spiral conductive plate 48. The elastic spiral conductive plate 48 is configured to radially contract to abut against the outside of the heat exchange box 43 when heated, and to axially compress and deform when the annular block 47 is driven by an external force.

[0020] Furthermore, the heat pipe 33 is a high-efficiency heat-conducting element that utilizes the principle of phase change heat transfer. It contains a working fluid and is divided into an evaporation section 331 and a condensation section 332 along the axial direction. The evaporation section 331 is located inside the vacuum tube 31 as the heat absorption end. After the vacuum tube 31 absorbs solar heat, it conducts it to the evaporation section 331, causing the liquid working fluid inside to vaporize. The gaseous working fluid rises to the condensation section 332 and releases latent heat, transferring the heat to the heat transfer oil in the heat exchange box 43. At the same time, it condenses into a liquid and flows back to the evaporation section 331. This cycle repeats to achieve continuous unidirectional heat transfer. This is a mature existing technology and will not be elaborated further here.

[0021] Furthermore, the elastic spiral conductive plate 48 is sleeved on the outside of the heat exchange box 43. Its spiral structure can increase the heat dissipation area. Its bottom end is fixed and its top end is slidably sleeved through the annular block 47. When heated, it contracts radially to fit tightly against the heat exchange box 43 to improve the heat conduction efficiency. When the annular block 47 is driven by external force, it can be axially compressed and deformed to remove surface deposits. The elastic spiral conductive plate 48 is preferably made of elastic metal material, such as beryllium bronze or stainless steel, to ensure good elastic recovery performance and thermal conductivity.

[0022] Multiple guide rods 49 arranged in a circular array are fixedly installed on the top of the annular block 47. The multiple guide rods 49 all pass through the cylindrical part 422 and are slidably connected to the cylindrical part 422. The same pressure ring 410 is fixedly installed on the end of the multiple guide rods 49 away from the annular block 47.

[0023] A sealing ring 44 is detachably installed at the bottom of the intermediate tube 42. The sealing ring 44 is detachably sleeved on the condensing section 332, and the condensing section 332 and the sealing ring 44 are sealed together.

[0024] The top of the heat exchanger box 43 is provided with a filling port 45, and a plug plate 46 is detachably installed inside the filling port 45.

[0025] Furthermore, the filling port 45 is used to add heat transfer oil and other heat transfer media into the heat exchange tank 43. The plug plate 46 is detachably installed inside the filling port 45 and plays a sealing role after the filling is completed to prevent the heat transfer media from leaking or external impurities from entering. At the same time, it is convenient to replace or replenish the heat transfer media later. Heat transfer oil is added into the heat exchange tank 43 through the filling port 45 to the predetermined liquid level. After the filling is completed, the plug plate 46 is installed to play a sealing role to prevent the heat transfer media from leaking or external impurities from entering. At the same time, it is convenient to replace or replenish the heat transfer media later.

[0026] The space between the heat exchanger box 43 and the condenser section 332 is filled with heat transfer oil.

[0027] Furthermore, the heat transfer oil has advantages such as large specific heat capacity, good thermal conductivity, high boiling point, and good chemical stability. The condensation section 332 releases heat to the heat transfer oil, which then evenly conducts the heat to the heat exchange box 43, thereby improving the heat exchange efficiency through a multi-stage liquid-solid-liquid heat transfer method.

[0028] The vacuum tube 31 is provided with two heat-conducting plates 34. The heat-conducting plates 34 include an arc-shaped part 342 that fits and is sleeved on the outside of the evaporation section 331. Both sides of the arc-shaped part 342 are provided with semi-circular parts 341, and both semi-circular parts 341 fit and abut against the inner wall of the vacuum tube 31.

[0029] Furthermore, the heat-conducting plate 34 is attached to the inner wall of the vacuum tube 31 via the semi-circular portion 341, efficiently transferring the solar heat absorbed by the inner wall of the vacuum tube 31 to the arc-shaped portion 342. The arc-shaped portion 342 is tightly fitted onto the outside of the evaporation section 331, concentrating the heat transfer to the evaporation section 331. The two semi-circular portions 341 are symmetrically arranged, which can hold the evaporation section 331, ensuring good contact between the heat-conducting plate 34 and the evaporation section 331, and improving the heat transfer efficiency.

[0030] The mounting box 2 has an inspection port 21, and a cover plate 22 is detachably installed inside the inspection port 21.

[0031] Furthermore, the access port 21 provides operators with a passage to the interior of the mounting box 2, facilitating maintenance and repair of the heat exchange mechanism 4 or manual operation of the pressure ring 410 for descaling. The cover plate 22 is detachably installed at the access port 21, and closes the access port 21 during normal operation, serving to prevent dust and protect the internal structure.

[0032] Multiple carriers 5 are detachably mounted on the frame 1, and the bottom ends of multiple vacuum tubes 31 are respectively installed in the corresponding carriers 5.

[0033] Furthermore, the bottom end of the vacuum tube 31 is installed inside the carrier 5, which positions and supports the vacuum tube 31, preventing it from shaking or shifting due to its own weight or external forces, and ensuring the stability of the connection between the vacuum tube 31 and the mounting box 2. The detachable installation facilitates the replacement and maintenance of the vacuum tube 31.

[0034] The mounting box 2 has multiple mounting holes 23 on the side away from the inspection port 21. Each mounting hole 23 has a sealing ring fixedly installed in it. Multiple vacuum tubes 31 pass through the sealing rings in the corresponding mounting holes 23 and are sealed to them.

[0035] In this embodiment: during use, an inlet pipe and an outlet pipe are connected to the two side pipes 41 respectively. Water in the inlet pipe flows into the corresponding side pipe 41, then flows through the middle pipe 42 and then flows out from the other side pipe 41 into the outlet pipe.

[0036] The vacuum tubes 31 on each heating mechanism 3 absorb solar heat and heat the evaporation section 331 inside. The evaporation section 331 transfers the heat to the condensation section 332, which in turn conducts the heat to the external heat transfer oil. The heat transfer oil then conducts the heat to the heat exchange box 43, which in turn conducts the heat to the water flowing through the intermediate pipe 42, thereby heating the water flowing through the intermediate pipe 42.

[0037] After the heat exchange box 43 is heated, it expands radially due to thermal expansion and contraction, and comes into close contact with the inner side of the elastic spiral conductive plate 48 sleeved on its outer side. The heat exchange box 43 conducts heat to the elastic spiral conductive plate 48. By increasing the heat dissipation area, the water flowing through the intermediate pipe 42 can be fully heated. At the same time, after the elastic spiral conductive plate 48 is heated, it also contracts radially due to thermal expansion and contraction, and comes into close contact with the outer side of the heat exchange box 43, so that the heat of the heat exchange box 43 can be fully conducted to the elastic spiral conductive plate 48.

[0038] When scale builds up on the outside of the heat exchange box 43 and the elastic spiral conductive plate 48 due to long-term use, cover the heating mechanism 3 at night to prevent it from absorbing solar heat. Then remove the cover plate 22 to expose the inspection port 21. Then put your hand into the installation box 2 and press each pressure ring 410 in turn. Pressing the pressure ring 410 pushes the annular block 47 towards the cylindrical portion 421 via multiple guide rods 49. During this downward movement, the annular block 47 compresses the elastic spiral conductive plate 48. As the elastic spiral conductive plate 48 deforms under compression, its inner edge scrapes against the outer side of the heat exchange chamber 43, peeling off the scale adhering to its surface. Simultaneously, the elastic spiral conductive plate 48 undergoes twisting deformation during compression, causing the scale on its surface to automatically peel off. When the pressure ring 410 is released, the compressed elastic spiral conductive plate 48 automatically resets due to its elasticity, driving the multiple guide rods 49 and the pressure ring 410 to reset as well. By repeatedly pressing the pressure ring 410, the scale adhering to the outer side of the heat exchange chamber 43 and the elastic spiral conductive plate 48 can be completely peeled off. The peeled-off scale is automatically discharged with the water flowing through the intermediate pipe 42.

[0039] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A solar thermal tube collector, characterized in that, The collector includes: a frame (1), a mounting box (2) is fixedly installed on the top of the frame (1), and multiple heating mechanisms (3) are installed through one side of the mounting box (2). The heating mechanism (3) includes a vacuum tube (31) that passes through the mounting box (2) and is detachably connected to the mounting box (2). The bottom of the vacuum tube (31) is sealed. A sealing head (32) is detachably installed on the top of the vacuum tube (31). A heat pipe component (33) is detachably installed through the sealing head (32). The heat pipe component (33) includes an evaporation section (331) and a condensation section (332). The evaporation section (331) is located inside the vacuum tube (31). A heat exchange mechanism (4) is fixedly installed through the mounting box (2). The heat exchange mechanism (4) includes two side tubes (41) and a middle tube (42) fixedly connected between the two. The middle tube (42) is provided with multiple coaxial cylindrical parts one (421) and cylindrical parts two (422). The same heat exchange box (43) is fixedly installed through the coaxial cylindrical parts one (421) and cylindrical parts two (422). The bottom of the middle tube (42) is open. The condensing section (332) extends into the heat exchange box (43). The heat exchange box (43) is used to contain the heat transfer medium to conduct the heat of the condensing section (332) to the middle tube (42). The heat exchange cylindrical box (43) is slidably fitted with an elastic spiral conductive plate (48) located inside the intermediate tube (42). The bottom end of the elastic spiral conductive plate (48) is fixedly connected to the bottom inner wall of the cylindrical part (421). The top end of the elastic spiral conductive plate (48) is fixedly installed with an annular block (47) slidably fitted on the heat exchange cylindrical box (43). The elastic spiral conductive plate (48) is configured to radially contract to abut against the outside of the heat exchange cylindrical box (43) when heated, and to axially compress and deform when the annular block (47) is driven by an external force.

2. A solar thermal tube collector according to claim 1, characterized in that: The top of the annular block (47) is fixedly installed with a plurality of guide rods (49) arranged in a circular array. The plurality of guide rods (49) all pass through the cylindrical part (422) and are sealed and slidably connected to the cylindrical part (422). The ends of the plurality of guide rods (49) away from the annular block (47) are fixedly installed with the same pressure ring (410).

3. A solar thermal tube collector according to claim 1, characterized in that: A sealing ring (44) is detachably installed at the bottom of the intermediate tube (42). The sealing ring (44) is detachably sleeved on the condensing section (332), and the condensing section (332) and the sealing ring (44) are sealed together.

4. A solar thermal tube collector according to claim 1, characterized in that: The heat exchanger box (43) has a filling port (45) on its top, and a plug plate (46) is detachably installed inside the filling port (45).

5. A solar thermal tube collector according to claim 1, characterized in that: The space between the heat exchange box (43) and the condensation section (332) is filled with heat transfer oil.

6. A solar thermal tube collector according to claim 1, characterized in that: The vacuum tube (31) is provided with two heat-conducting plates (34). The heat-conducting plate (34) includes an arc-shaped part (342) fitted and sleeved on the outside of the evaporation section (331). Both sides of the arc-shaped part (342) are provided with semi-circular parts (341). Both semi-circular parts (341) are fitted and abutted against the inner wall of the vacuum tube (31).

7. A solar thermal tube collector according to claim 1, characterized in that: The installation box (2) has an inspection port (21), and a cover plate (22) is detachably installed inside the inspection port (21).

8. A solar thermal tube collector according to claim 1, characterized in that: Multiple carriers (5) are detachably mounted on the frame (1), and the bottom ends of the multiple vacuum tubes (31) are respectively installed in the corresponding carriers (5).

9. A solar thermal tube collector according to claim 7, characterized in that: The mounting box (2) has multiple mounting holes (23) on the side away from the inspection port (21). Each mounting hole (23) has a sealing ring fixedly installed in it. Each vacuum tube (31) passes through the sealing ring in the corresponding mounting hole (23) and is sealed to it.

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