Natural convection and heat pipe double-engine heat transfer solar water heater

Abstract

The utility model discloses a natural convection and heat pipe double-engine heat transfer solar water heater which comprises a water storage tank connected with one end of a vacuum pipe; and the heat pipe is partially arranged in the vacuum pipe, and one end of the heat pipe in the water storage tank extends out of the vacuum pipe. The heat pipe is additionally arranged in the vacuum pipe and directly inserted into the water storage tank, water in the water storage tank can be directly heated, and through double-engine heating of the vacuum pipe and the heat pipe, the heating speed of the water heater is increased, and the water heater is more efficient.

Description

Technical Field

[0001] The utility model belongs to the field of solar water heaters, and in particular relates to a solar water heater with dual heat transfer by natural convection and heat pipes. Background Art

[0002] A solar water heater is a heating device that converts sunlight energy into thermal energy, heating water from low temperature to high temperature to meet people's hot water needs in life and production. Existing vacuum tube solar water heaters absorb the sun's heat through vacuum tubes and transfer the heat to the water in the tubes. After the water in the tubes absorbs heat, its temperature rises, its specific gravity decreases and it rises, forming an upward force, forming a thermal siphon system. As the hot water continues to move upward and is stored in the upper part of the water tank, the lower temperature water is continuously replenished along the other side of the tube, and the cycle repeats, and eventually the entire tank of water rises to a certain temperature. However, this method transfers heat slowly. If the heat in the vacuum tube cannot be transferred to the water tank in a timely and rapid manner, it will cause a certain amount of heat waste, affecting the heat absorption rate of the water in the water tank, and thus affecting the overall thermal efficiency of the vacuum tube solar water heater.

[0003] In view of this, the present utility model is proposed. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a solar water heater with dual heat transfer by natural convection and heat pipes, so as to improve the heat transfer speed of the solar water heater and enhance the overall thermal efficiency.

[0005] In order to solve the above technical problems, the basic concept of the technical solution adopted by the utility model is:

[0006] Provided is a solar water heater with dual heat transfer by natural convection and heat pipe, comprising:

[0007] a water storage tank connected to one end of the vacuum tube;

[0008] A heat pipe is partially arranged in the vacuum tube, and one end of the heat pipe located in the water storage tank extends out of the vacuum tube.

[0009] In the above solution, the heat pipe is arranged in the water storage tank and the vacuum tube through a limiting frame.

[0010] In the above solution, the limiting frame is arranged on the vacuum tube or the heat pipe in the water storage tank.

[0011] In the above scheme, the limiting frame is cooperatively connected with the vacuum tube at the end of the vacuum tube, and a through hole is provided on the limiting frame so that the vacuum tube and the water in the water storage tank can flow mutually.

[0012] In the above solution, a limiting portion is provided at the center of the limiting frame, the limiting portion matches the shape of the heat pipe, and a support rod is provided between the frame of the limiting frame and the limiting portion.

[0013] In the above solution, the exterior of the limiting frame is a circular ring structure, and the limiting portion is a limiting ring.

[0014] In the above solution, the limiting frame is arranged on the heat pipe, the diameter of the heat pipe located on one side of the limiting frame matches the limiting portion, and the diameter of the heat pipe located on the other side of the limiting frame is larger than the limiting portion.

[0015] In the above solution, the heat pipe matching the limiting portion is located in the vacuum tube, and the heat pipe having a diameter larger than that of the limiting portion is located in the water storage tank.

[0016] In the above solution, the bottom of the heat pipe does not contact the inner wall of the vacuum tube.

[0017] In the above solution, the length of the heat pipe in the vacuum tube is not less than half the length of the vacuum tube.

[0018] After adopting the above technical scheme, the utility model has the following beneficial effects compared with the prior art.

[0019] (1) A heat pipe is added inside the vacuum tube, and the heat pipe is directly inserted into the water tank, which can directly heat the water in the water tank. The dual heating of the vacuum tube and the heat pipe increases the heating speed of the water heater and makes it more efficient.

[0020] (2) A limit frame is provided on the heat pipe to fix the heat pipe on the central axis of the vacuum tube, thereby ensuring that the heat pipe does not shake or slip inside the vacuum tube, thereby ensuring the heating effect of the heat pipe.

[0021] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation on the present invention. Obviously, the accompanying drawings described below are only some embodiments. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work. In the accompanying drawings:

[0023] Figure 1 This is a schematic diagram of the overall structure of the solar water heater with natural convection and heat pipe dual-engine heat transfer of the utility model;

[0024] Figure 2It is a schematic diagram of a water storage tank of a solar water heater with dual heat transfer by natural convection and heat pipes according to the utility model;

[0025] Figure 3 It is a schematic diagram of the connection between the heat pipe and the limit frame of the solar water heater with natural convection and heat pipe dual-engine heat transfer of the utility model;

[0026] Figure 4 The utility model is a schematic diagram of a limit frame of a solar water heater with dual heat transfer by natural convection and heat pipe.

[0027] In the figure: 10, water storage tank; 20, vacuum tube; 30, heat pipe; 31, limit frame; 311, ring structure; 312, limit ring; 313, support rod; 40, sealing ring.

[0028] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.

[0030] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] like Figures 1 to 4 As shown, the utility model provides a solar water heater with natural convection and heat pipe dual-engine heat transfer, comprising:

[0033] The water storage tank 10 is connected to one end of the vacuum tube 20 ; the heat pipe 30 is partially disposed in the vacuum tube 20 , and one end of the heat pipe 30 located in the water storage tank 10 extends out of the vacuum tube 20 .

[0034] The utility model adds a heat pipe 30 in the vacuum tube 20, and the heat pipe 30 is directly inserted into the water tank 10, which can directly heat the water in the water tank 10. Through the dual heating of the vacuum tube 20 and the heat pipe 30, the heating speed of the water heater is improved, which is more efficient.

[0035] In this embodiment, the heat pipe 30 is preferably arranged in the water storage tank 10 and the vacuum tube 20 through the limiting frame 31. It is ensured that the heat pipe 30 does not shake or slip in the vacuum tube 20, and the heating effect of the heat pipe 30 is ensured.

[0036] Furthermore, the limiting frame 31 is arranged on the vacuum tube 20 or the heat pipe 30 in the water storage tank 10. Specifically, the limiting frame 31 is connected with the vacuum tube 20 at the end of the vacuum tube 20, and a through hole is provided on the limiting frame 31, so that the water in the vacuum tube 20 and the water storage tank 10 can flow mutually. Since the vacuum tube 20 heats the water in the water storage tank 10 through the flow of water, the limiting frame 31 will not affect the flow of water.

[0037] Furthermore, a limiting portion is provided at the center of the limiting frame 31, the limiting portion matches the shape of the heat pipe 30, and a support rod 313 is provided between the frame of the limiting frame 31 and the limiting portion. In this way, the heat pipe 30 can be fixedly arranged at the central axis position of the vacuum tube 20.

[0038] Specifically, the outer portion of the limiting frame 31 is a circular ring structure 311, and the limiting portion is a limiting ring 312. The hole structure formed by the circular ring structure 311, the limiting ring 312 and the support rod 313 ensures the circulation of water between the vacuum tube 20 and the water storage tank 10.

[0039] In this embodiment, preferably, the limiting frame 31 is arranged on the heat pipe 30, and the diameter of the heat pipe 30 located on one side of the limiting frame 31 matches the limiting portion, and the diameter of the heat pipe 30 located on the other side of the limiting frame 31 is larger than the limiting portion. Therefore, a positioning effect is achieved. Specifically, the heat pipe 30 matching the limiting portion is located in the vacuum tube 20, and the heat pipe 30 with a diameter larger than the limiting portion is located in the water tank 10. Since the vacuum tube 20 is at the lower part of the water tank 10, and the thick end of the heat pipe 30 is located in the upper water tank 10, it plays a role of engaging with the limiting portion, thereby preventing the heat pipe 30 from sliding.

[0040] In this embodiment, the bottom of the heat pipe 30 is preferably not in contact with the inner wall of the vacuum tube 20. This avoids the risk of the heat pipe 30 being too long and puncturing the vacuum tube 20 during installation. The length of the heat pipe 30 in the vacuum tube 20 is not less than half the length of the vacuum tube 20. That is, the length of the heat pipe 30 is long enough to ensure the heat absorption capacity of the heat pipe 30 and the heating effect.

[0041] In this embodiment, a sealing ring 40 is further provided on the outer periphery of the vacuum tube 20 , which can seal the vacuum tube 20 and the body of the water tank 10 .

[0042] In this embodiment, the heat pipe 30 is preferably fixed to the limiting frame 31 by welding, so as to ensure the stability between the limiting frame 31 and the heat pipe 30 and the limiting effect.

[0043] In this embodiment, the heat pipe 30 is preferably made of metal material. Further, it is made of copper, which has good thermal conductivity and good corrosion resistance in the atmosphere, seawater, certain non-oxidizing acids (hydrochloric acid, dilute sulfuric acid), alkali, salt solutions and various organic acids (acetic acid, citric acid).

[0044] In this embodiment, the interior of the heat pipe 30 is preferably in a vacuum state. And there is liquid inside the heat pipe 30. Specifically, the interior of the heat pipe 30 is a vacuum, one end of the water storage tank 10 is the condensation end, and the other end is the evaporation end. The liquid is also at the evaporation end. The evaporation end is irradiated by the sun and converts the solar energy into heat energy. The liquid absorbs heat and evaporates, rises to the condensation end, condenses and releases heat, heats the water in the water storage tank 10, and the liquid condenses and flows back to the evaporation end. This cycle repeats to complete the heating of the water in the water storage tank 10.

[0045] In this embodiment, the heat pipe 30 is a gravity heat pipe, which has the advantages of fast heat transfer, small resistance, and no pipe explosion. Of course, other types of heat pipes can also be selected according to actual conditions, which is not limited here.

[0046] In this embodiment, each vacuum tube 20 is preferably provided with a heat pipe 30, and the heating efficiency is high. The heat pipe 30 may also be distributed in other ways as required, such as: vacuum tubes 20 with heat pipes 30 disposed therein and vacuum tubes 20 without heat pipes 30 disposed therein are arranged at intervals, or heat pipes 30 are added at both ends of the water heater or in the middle of the water heater. The design may be made according to actual conditions and is not limited here.

[0047] The utility model adds a heat pipe in the vacuum tube, and the heat pipe is directly inserted into the water tank, which can directly heat the water in the water tank. Through the dual heating of the vacuum tube and the heat pipe, the heating speed of the water heater is improved, which is more efficient. A limit frame is set on the heat pipe to fix the heat pipe on the central axis of the vacuum tube, ensuring that the heat pipe does not shake or slip in the vacuum tube, thereby ensuring the heating effect of the heat pipe.

[0048] The above is only a preferred embodiment of the present invention, and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with this patent can make some changes or modifications to equivalent embodiments of equivalent changes using the technical content suggested above without departing from the scope of the technical solution of the present invention. The implementation schemes in the above embodiments can also be further combined or replaced. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the present invention.

Claims

1. A solar water heater with dual heat transfer by natural convection and heat pipe, characterized in that: include: a water storage tank connected to one end of the vacuum tube; A heat pipe is partially arranged in the vacuum tube, and one end of the heat pipe located in the water storage tank extends out of the vacuum tube.

2. The solar water heater with dual heat transfer by natural convection and heat pipe according to claim 1, characterized in that: The heat pipe is arranged in the water storage tank and the vacuum tube through a limiting frame.

3. The solar water heater with dual heat transfer by natural convection and heat pipe according to claim 2, characterized in that: The limiting frame is arranged on the vacuum tube or the heat pipe in the water storage tank.

4. The solar water heater with dual heat transfer by natural convection and heat pipe according to claim 3 is characterized in that: The limiting frame is cooperatively connected with the vacuum tube at the end of the vacuum tube, and a through hole is provided on the limiting frame so that the vacuum tube and the water in the water storage tank can flow mutually.

5. The solar water heater with dual heat transfer by natural convection and heat pipe according to claim 4, characterized in that: A limiting portion is provided at the center of the limiting frame, the limiting portion matches the shape of the heat pipe, and a support rod is provided between the frame of the limiting frame and the limiting portion.

6. The solar water heater with dual heat transfer by natural convection and heat pipe according to claim 5, characterized in that: The exterior of the limiting frame is a circular ring structure, and the limiting portion is a limiting ring.

7. The solar water heater with dual heat transfer by natural convection and heat pipe according to claim 6, characterized in that: The limiting frame is arranged on the heat pipe, the diameter of the heat pipe located on one side of the limiting frame matches the limiting portion, and the diameter of the heat pipe located on the other side of the limiting frame is larger than the limiting portion.

8. The solar water heater with dual heat transfer by natural convection and heat pipe according to claim 7, characterized in that: The heat pipe matched with the limiting part is located in the vacuum tube, and the heat pipe with a diameter larger than that of the limiting part is located in the water storage tank.

9. The solar water heater with dual heat transfer by natural convection and heat pipe according to claim 1, characterized in that: The bottom of the heat pipe does not contact the inner wall of the vacuum tube.

10. The solar water heater with dual heat transfer by natural convection and heat pipe according to claim 1, characterized in that: The length of the heat pipe in the vacuum tube is not less than half of the length of the vacuum tube.

Images