Novel solar vacuum tube

Abstract

The utility model discloses a novel solar vacuum tube which comprises a transparent tube body, and an installation circular plate is arranged on the transparent tube body. A heat pipe is arranged on the mounting circular plate, heat absorption plates are arranged on the two sides of the heat pipe, the heat pipe and the heat absorption plates are arranged in an inner cavity of the transparent pipe body, a heat storage shell is arranged on the mounting circular plate, and the heat pipe further extends into an inner cavity of the heat storage shell to heat the inner cavity of the heat storage shell to complete the heat storage procedure. The solar water heater has the advantages that the heat storage shell communicated with the heat pipe is arranged, so that the heat absorption plate transmits heat energy to the heat pipe and the heat storage shell at the same time in the sunshine period, when the heat absorption plate cannot obtain solar energy (such as at night or in a cloudy and rainy environment), the heat energy stored in the heat storage shell is reversely released through the heat pipe, continuity of heat energy supply is achieved, and the service life of the solar water heater is prolonged. And the effective working time of the vacuum tube is obviously prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to a novel solar vacuum tube. BACKGROUND

[0002] As the core component of light-heat conversion, the solar vacuum tube is widely used in solar water heater and heating system. The traditional vacuum tube absorbs solar energy through the heat absorption coating and heats the internal working medium (such as water or heat conducting oil), and relies on the instant sunshine to realize the heat transfer.

[0003] The performance of the traditional solar vacuum tube is limited by the instantaneous heating mode and the low-efficiency heat storage design, which cannot realize the balanced use of heat energy across time periods. Moreover, the complex external heat storage system increases the manufacturing cost and failure rate. In view of this, the utility model provides a novel solar vacuum tube to solve the above problems. SUMMARY

[0004] The utility model aims at providing a novel solar vacuum tube to solve the problems raised in the background art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A novel solar vacuum tube comprises a transparent tube body, and a mounting circular plate is arranged on the transparent tube body;

[0007] A heat pipe is arranged on the mounting circular plate, and heat absorption plates are arranged on both sides of the heat pipe. The heat pipe and the heat absorption plates are arranged in the inner cavity of the transparent tube body. A heat storage shell is arranged on the mounting circular plate. The heat pipe also extends into the inner cavity of the heat storage shell to complete the heat storage process by heating the inner cavity of the heat storage shell.

[0008] As an improvement of the above-mentioned technical scheme, a heat storage phase change material is arranged in the inner cavity of the heat storage shell, and the heat pipe contacts the heat storage phase change material to store heat.

[0009] As an improvement of the above-mentioned technical scheme, a plurality of fins are arranged on the heat pipe. The plurality of fins are evenly arranged along the axis of the heat pipe, and the plurality of fins are arranged in the inner cavity of the heat storage shell.

[0010] As an improvement of the above-mentioned technical scheme, a mounting ring is arranged on the transparent tube body, and the mounting ring is matched with the mounting circular plate.

[0011] A plurality of first mounting holes are evenly arranged on the mounting ring, and a plurality of second mounting holes are evenly arranged on the mounting circular plate. The plurality of first mounting holes are matched with the plurality of second mounting holes in position, and the first mounting holes and the second mounting holes are connected by bolts.

[0012] As the improvement of the above technical scheme, the first connecting pipe is arranged on the mounting round plate and communicates with the inner cavity of the transparent pipe body.

[0013] The first valve is arranged on the first connecting pipe.

[0014] As the improvement of the above technical scheme, the second connecting pipe is arranged on the mounting round plate and communicates with the inner cavity of the heat storage shell.

[0015] The second valve is arranged on the second connecting pipe.

[0016] As the improvement of the above technical scheme, the length of the heat storage shell is same as the length of the heat absorbing plate, and the gap is arranged between the heat storage shell and the heat absorbing plate.

[0017] Compared with the prior art, the utility model has the advantages of:

[0018] By arranging the heat storage shell communicated with the heat pipe, the heat absorbing plate can transfer the heat energy to the heat pipe and the heat storage shell at the sunshine period, when the heat absorbing plate cannot obtain the solar energy (such as night or rainy environment), the heat energy stored in the heat storage shell is released reversely through the heat pipe, the continuity of heat energy supply is realized, the effective working time of the vacuum tube is prolonged, the technical bottleneck of the traditional solar vacuum tube depending on instantaneous sunshine, low heat energy utilization rate and heat supply interruption at night is solved, and the advantages of high efficient heat storage, stable energy supply and easy maintenance are combined. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the structural schematic diagram of the utility model;

[0020] Figure 2 It is the structural schematic diagram of the heat pipe and the heat absorbing plate of the utility model;

[0021] Figure 3 It is the structural schematic diagram of the mounting round plate of the utility model;

[0022] Figure 4 It is the structural schematic diagram of the transparent pipe body of the utility model;

[0023] Figure 5 It is the side view of the utility model;

[0024] Figure 6 It is the A-A sectional view of the utility model Figure 5 .

[0025] In the figure: 10, transparent tube; 11, mounting ring; 12, first mounting hole; 20, mounting disc; 21, second mounting hole; 22, first connecting pipe; 23, first valve; 24, second connecting pipe; 25, second valve; 30, heat pipe; 31, heat absorber plate; 32, fins; 40, heat storage shell. Detailed Implementation

[0026] 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.

[0027] Example:

[0028] like Figures 1-6 As shown, this embodiment proposes a novel solar vacuum tube, including a transparent tube body 10, on which a mounting circular plate 20 is provided;

[0029] A heat pipe 30 is provided on the mounting circular plate 20, and heat absorption plates 31 are provided on both sides of the heat pipe 30. The heat pipe 30 and heat absorption plates 31 are both located in the inner cavity of the transparent tube body 10. A heat storage shell 40 is provided on the mounting circular plate 20, and the heat pipe 30 extends into the inner cavity of the heat storage shell 40 to heat the inner cavity of the heat storage shell 40 to complete the heat storage process.

[0030] In this embodiment, when the solar vacuum tube is in use, the mounting circular plate 20 is connected to the transparent tube body 10, and the heat pipe 30 and the heat absorber plate 31 are inserted into the transparent tube body 10. During the day, the heat absorber plate 31 transfers heat energy to the heat pipe 30, and then transfers it to other usage environments (such as the water tank of a solar water heater). During the heat transfer process, since the heat pipe 30 also extends into the heat storage shell 40, it can simultaneously transfer heat energy to the heat storage shell 40, which stores the heat energy. When the heat absorber plate 31 cannot absorb heat, the heat energy in the heat storage shell 40 is transferred to the heat pipe 30 to continuously heat other usage environments.

[0031] By setting the heat storage shell 40 communicated with the heat pipe 30, the heat absorption plate 31 can transfer heat energy to the heat pipe 30 and the heat storage shell 40 at the same time during the sunlight period, and when the heat absorption plate 31 cannot obtain solar energy (such as at night or in a rainy environment), the heat energy stored in the heat storage shell 40 is released reversely through the heat pipe 30, realizing the continuity of heat energy supply, significantly prolonging the effective working time of the vacuum tube, solving the technical bottleneck of the traditional solar vacuum tube relying on instantaneous sunlight, low heat energy utilization rate and interrupted heat supply at night, and having the advantages of efficient heat storage, stable energy supply and easy maintenance.

[0032] Specifically, the heat storage shell 40 is provided with a heat storage phase change material in the inner cavity, and the heat pipe 30 is in contact with the heat storage phase change material for heat storage.

[0033] In the case, the heat storage phase change material is preferably paraffin or a composite phase change material (such as paraffin / expanding graphite), which takes into account the heat storage density and heat conduction efficiency.

[0034] In the embodiment, the heat storage phase change material absorbs and stores the excess heat energy transferred from the heat absorption plate 31 to the heat pipe 30 through a solid-liquid phase change process, and when the ambient temperature drops or the sunlight is insufficient, the phase change material reverses from liquid to solid to release latent heat, continuously outputting heat energy to the outside through the heat pipe 30, effectively solving the problem of discontinuous heat supply of the traditional vacuum tube due to day and night temperature difference, and significantly improving the energy utilization rate.

[0035] Of course, the direct contact design of the heat pipe 30 and the heat storage phase change material avoids the thermal resistance caused by the heat transfer medium or the interface material in the conventional heat storage structure, realizes the lossless thermal coupling of the heat pipe 30 and the heat storage shell 40, shortens the response time of heat energy storage and release, and reduces the loss in the heat energy transfer path.

[0036] Meanwhile, the phase change characteristics of the heat storage phase change material can buffer the temperature mutation of the heat absorption plate 31 caused by sunlight fluctuation, so that the heat energy output by the heat pipe 30 remains relatively constant, avoiding the equipment fatigue or efficiency reduction of the use end such as a water heater caused by sudden temperature change, and prolonging the overall service life of the system.

[0037] Specifically, the heat pipe 30 is provided with a plurality of fins 32, and the plurality of fins 32 are uniformly arranged along the axis of the heat pipe 30, and the plurality of fins 32 are arranged in the inner cavity of the heat storage shell 40.

[0038] In the embodiment, the fins 32 are uniformly arranged along the axis of the heat pipe 30, which significantly increases the contact area of the heat pipe 30 and the heat storage phase change material, shortens the heat energy transfer path from the heat pipe 30 to the phase change material, and increases the melting rate of the phase change material in the heat absorption stage, while shortening the heat energy return response time in the heat release stage.

[0039] Specifically, the transparent tube body 10 is provided with a mounting ring 11, and the mounting ring 11 is matched with the mounting circular plate 20.

[0040] A plurality of groups of first mounting holes 12 are uniformly arranged on the mounting ring 11, and a plurality of groups of second mounting holes 21 are uniformly arranged on the mounting circular plate 20. The plurality of groups of first mounting holes 12 are positionally matched with the plurality of groups of second mounting holes 21, and the first mounting holes 12 and the second mounting holes 21 are connected through bolts.

[0041] In this embodiment, the mounting ring 11 and the mounting circular plate 20 are precisely positioned and connected through the plurality of groups of first mounting holes 12 and the plurality of groups of second mounting holes 21, thereby ensuring the sealing performance of the transparent tube body 10 and external equipment, and simplifying the disassembly and maintenance process.

[0042] Specifically, the mounting circular plate 20 is provided with a first connecting pipeline 22, and the first connecting pipeline 22 is in communication with the inner cavity of the transparent tube body 10.

[0043] The first connecting pipeline 22 is provided with a first valve 23.

[0044] In this embodiment, the first connecting pipeline 22 can make the transparent tube body 10 in inner cavity communication with an external vacuum generator, so as to maintain a vacuum state in the transparent tube body 10.

[0045] Specifically, the mounting circular plate 20 is provided with a second connecting pipeline 24, and the second connecting pipeline 24 is in communication with the inner cavity of the heat storage shell 40.

[0046] The second connecting pipeline 24 is provided with a second valve 25.

[0047] In this embodiment, the second connecting pipeline 24 serves as a special filling channel of the heat storage shell 40. By opening the second valve 25, liquid or molten phase change material can be directly injected into the inner cavity of the heat storage shell 40 from the outside, without the need to disassemble the heat storage shell 40 or damage the overall structure of the vacuum tube.

[0048] Specifically, the length of the heat storage shell 40 is the same as the length of the heat absorption plate 31, and a gap is arranged between the heat storage shell 40 and the heat absorption plate 31.

[0049] In this embodiment, by designing the heat storage shell 40 and the heat absorption plate 31 to be the same length, the solar energy absorbed by the heat absorption plate 31 in the full length range can be synchronously transmitted to the phase change material in the heat storage shell 40 through the heat pipe 30, thereby eliminating the problem of uneven axial distribution of heat energy caused by length difference in traditional heat storage units, and effectively improving the heat transfer efficiency.

[0050] Of course, the reserved gap (preferably 0.5-3mm) forms a thermal expansion buffer space, which avoids mechanical interference caused by the deformation of the heat absorption plate 31 and the heat storage shell 40 due to temperature difference, and ensures the structural integrity during long-term operation.

[0051] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel solar evacuated tube characterized in that: Including transparent tube body (10), be provided with installation round plate (20) on the transparent tube body (10); Heat pipe (30) is provided on the installation round plate (20), and heat absorption plate (31) is provided on both sides of heat pipe (30), and heat pipe (30) and heat absorption plate (31) are arranged in the inner cavity of transparent tube body (10), heat storage shell (40) is provided on the installation round plate (20), and heat pipe (30) also extends into the inner cavity of heat storage shell (40), and the heat storage process is completed by heating the inner cavity of heat storage shell (40).

2. A novel solar evacuated tube as claimed in claim 1, wherein: The inner cavity of the heat storage shell (40) is provided with a heat storage phase change material, and the heat pipe (30) is in contact with the heat storage phase change material to store heat.

3. A novel solar evacuated tube as claimed in claim 1, wherein: A plurality of groups of fins (32) are provided on the heat pipe (30), and the plurality of groups of fins (32) are uniformly arranged along the axis of the heat pipe (30), and the plurality of groups of fins (32) are arranged in the inner cavity of the heat storage shell (40).

4. A novel solar evacuated tube as claimed in claim 1, wherein: The transparent tube body (10) is provided with a mounting ring (11), and the mounting ring (11) is matched with the installation round plate (20); A plurality of groups of first mounting holes (12) are uniformly arranged on the mounting ring (11), and a plurality of groups of second mounting holes (21) are uniformly arranged on the installation round plate (20), the plurality of groups of first mounting holes (12) are matched with the plurality of groups of second mounting holes (21) in position, and the first mounting hole (12) and the second mounting hole (21) are connected by bolts.

5. A novel solar evacuated tube as claimed in claim 1, wherein: The first connecting pipeline (22) is arranged on the installation round plate (20), and the first connecting pipeline (22) is communicated with the inner cavity of the transparent tube body (10); The first connecting pipeline (22) is provided with a first valve (23).

6. A novel solar evacuated tube as claimed in claim 1, wherein: The second connecting pipeline (24) is arranged on the installation round plate (20), and the second connecting pipeline (24) is communicated with the inner cavity of the heat storage shell (40); The second connecting pipeline (24) is provided with a second valve (25).

7. A novel solar evacuated tube as claimed in claim 1, wherein: The length of the heat storage shell (40) is the same as the length of the heat absorption plate (31), and a gap is arranged between the heat storage shell (40) and the heat absorption plate (31).

Images