Patent Application
20130160758
1. Field of the Invention
The present invention relates to a solar collector, and in particular to a heat-pipe solar collector and a sealing assembly thereof.
2. Description of Prior Art
Among the solar devices, solar collector has become a popular device having commercial use and economical benefits. In order to improve the conversion efficiency of the solar energy, heat pipes having good heat conductivity are assembled in the solar collector to serve as heat-conducting elements. Such a heat-pipe solar collector has a good effect.
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In assembling the heat-pipe solar energy, the heat-exchanging pipe 10a is provided with a plurality of penetration holes 11a. Then, the branch pipes 20a are inserted into the penetration holes 11a and welded thereto respectively. Finally, the inner walls of the branch pipes 20a are coated with heat-conducting medium 40a. In this way, the heat pipes 30a can be tightly disposed in the penetration holes 11a.
The assembly of the above-mentioned conventional heat-pipe solar energy 1a is complicated and time-consuming. Further, the water may leak from the solar collector via the welded portions. Nevertheless, the heat pipes 30a are not brought into direct thermal contact with the water in the heat-exchanging pipe 10a. Instead, the heat conduction between the heat pipes 30a and the heat-exchanging pipe 10a is achieved by means of the branch pipes 20a, so that the heat-conducting efficiency is insufficient.
In order to solve the above problems, the present Inventor proposes a novel and reasonable structure based on his expert knowledge and deliberate researches.
The present invention is to provide a sealing assembly of a heat-pipe solar collector, which is capable of keeping the tightness between the heat-exchanging pipe and the heat pipe, thereby improving the heat-exchanging effect.
The present invention provides a heat-pipe solar collector, which includes a heat-exchanging pipe, a connecting sleeve, a sealing ring, and at least one heat pipe. The heat-exchanging pipe has an accommodating space. One side surface of the heat-exchanging pipe is provided with a threaded blind hole and at least one through-hole in communication with the accommodating space. The connecting sleeve comprises a pipe post having a penetration hole. The heat pipe is disposed through the penetration hole. The outer surface of the pipe post is provided with a plurality of threads to be threadedly connected into the threaded blind hole. The sealing ring comprises an annular sheath put on the heat pipe and an annular piece extending outwardly from the outer edge of the annular sheath. The annular piece is pressed by the pipe post to abut the through-hole. One end of the heat pipe is disposed through the connecting sleeve and the sealing ring to be accommodated in the heat-exchanging pipe.
The present invention provides a sealing assembly of a heat-pipe solar collector, which is used for connecting a heat-exchanging pipe and a heat pipe. One side surface of the heat-exchanging pipe is provided with a threaded blind hole and a through-hole in the threaded blind hole. The sealing assembly includes a connecting sleeve and a sealing ring. The connecting sleeve comprises a pipe post having a penetration hole. The heat pipe is disposed through the penetration hole. The outer surface of the pipe post is provided with a plurality of threads to be threadedly connected into the threaded blind hole. The sealing ring comprises an annular sheath put on the heat pipe and an annular piece extending outwardly from the outer edge of the annular sheath. The annular sheath is disposed in the penetration hole. The annular piece is pressed by the pipe post to abut the through-hole. One end of the heat pipe is disposed through the connecting sleeve and the sealing ring to be accommodated in the heat-exchanging pipe.
The present invention provides a sealing assembly of a heat-pipe solar collector, wherein the sealing assembly has an O ring and the connecting sleeve abuts the annular piece of the sealing ring and the O ring. By this arrangement, the tightness between the connecting sleeve and the through-hole is kept, and the leakage of the water within the heat-exchanging pipe is prevented.
In comparison with prior art, according to the solar collector of the present invention, the sealing assembly is used to connect the heat pipe into the heat-exchanging pipe and keep the tightness there between. By using the connecting sleeve, the way of connecting the heat pipe to the heat-exchanging pipe is simplified. The sealing ring of the sealing assembly generates a sealing effect and guarantees the tightness, thereby preventing against the leakage of water in the heat-exchanging pipe. Further, in comparison with the indirect heat conduction achieved by the conventional heat pipe, the heat pipe of the present invention is brought into direct thermal contact with the water in the heat-exchanging pipe. Thus, the heat-conducting efficiency and the energy-collecting effect are excellent, so that the present invention demonstrates improved practicability.
The detailed description and technical contents of the present invention will become apparent with the following detailed description accompanied with related drawings. It is noteworthy to point out that the drawings is provided for the illustration purpose only, but not intended for limiting the scope of the present invention.
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In the present embodiment, the heat-collecting frame 10 is a triangular three-dimensional frame, but it is not limited thereto. The heat-exchanging pipe 20 and the heat pipe 40 are fixed to the heat-collecting frame 10. The heat-exchanging pipe 20 is provided at a higher position on the heat-collecting frame 10. The heat pipe 40 is inserted into the heat-collecting plate 50.
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The heat-exchanging pipe 20 has an accommodating space 200. One side surface of the heat-exchanging pipe 20 is provided with a threaded blind hole 21 and at least one through-hole 22 in communication with the accommodating space 200. The inner diameter of the through-hole 22 is slightly larger than that of the outer diameter of the heat pipe 40.
The sealing assembly 30 comprises a connecting sleeve 31, a sealing ring 32 and an O ring 33. The connecting sleeve 31 comprises a pipe post 311 having a penetration hole 310 and a knob 312 connected to the pipe post 311. The penetration hole 310 is provided in the axial center of the pipe post 311 and the knob 312. The inner diameter of the penetration hole 310 is slightly larger than the outer diameter of the heat pipe 40. That is, the heat pip 40 is disposed through the penetration hole 310. The outer surface of the pipe post 311 has a plurality of threads 3111, whereby the pipe post 311 of the connecting sleeve 31 can be threadedly connected into the threaded blind hole 21 of the heat-exchanging pipe 20. In practice, the threaded blind hole 21 is provided with inner threads, and the threads 3111 provided on the pipe post 311 are outer threads.
The sealing ring 32 comprises an annular sheath 321 put on the heat pipe 40 and an annular piece 322 extending outwardly from the outer edge of the annular sheath 321. In the present embodiment, the annular sheath 321 is disposed in the penetration hole 310 of the connecting sleeve 31. That is, the annular sheath 321 is located between the inner surface of the pipe post 311 and the outer surface of the heat pipe 40. The annular piece 322 is pressed by the pipe post 311 to abut the through-hole 22, so that the annular piece 322 can seal the through-hole 22 completely. In practice, the sealing ring 32 can be fixed to the heat pipe 40 by means of a soldering process, a welding process or the like, thereby filling the gap between the annular sheath 321 and the heat pipe 40.
The O ring 33 is put on the heat pipe 40. The O ring 33 is provided on the outside of the sealing ring 32 in such a manner that the O ring 33 is sandwiched between the through-hole 22 of the heat-exchanging pipe 20 and the annular piece 322 of the sealing ring 32. That is, the annular piece 322 abuts against the O ring 33, thereby keeping the tightness between the connecting sleeve 31 and the through-hole 22.
As shown in
First, the sealing ring 32 is welded to the heat pipe 40. In assembly, the connecting sleeve 31 and the O ring 33 are put on the heat pipe 40. Then, the knob 312 is rotated to make the heat pipe 40 attached with the sealing assembly 30 to be threadedly inserted into the threaded blind hole 21 until penetrating the through-hole 22. By using the sealing assembly 30, the heat pipe 40 can be tightly connected to the heat-exchanging pipe 20, thereby keeping the tightness therebetween.
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Although the present invention has been described with reference to the foregoing preferred embodiments, it will be understood that the invention is not limited to the details thereof. Various equivalent variations and modifications can still occur to those skilled in this art in view of the teachings of the present invention. Thus, all such variations and equivalent modifications are also embraced within the scope of the invention as defined in the appended claims.
