Heat pipe with built-in phase change liquid and solar heat collecting pipe

Abstract

The utility model relates to the technical field of solar heat collecting pipes, and discloses a heat pipe with built-in phase change liquid and a solar heat collecting pipe, which comprise a mounting disc, a solar heat collecting outer pipe is arranged on the right side of the mounting disc, a vacuum nozzle is arranged on the upper side of the outer part of the solar heat collecting outer pipe, and a fin ring is arranged on the outer part of the solar heat collecting outer pipe; and the phase change liquid inner heat pipe is inserted into the solar heat collection outer pipe, and a spiral cavity is formed in the outer portion of the phase change liquid inner heat pipe. According to the heat pipe internally provided with the phase change liquid and the solar heat collecting pipe, the spiral cavity is additionally arranged outside the phase change liquid inner heat pipe, so that the contact area between the phase change liquid inner heat pipe and the outside can be increased, the phase change liquid inner heat pipe can exchange heat with the surrounding environment more sufficiently, and the heat exchange efficiency is improved; and the fin ring additionally arranged outside the solar heat collection outer tube can increase the surface area of the heat collection outer tube, so that the solar energy absorption capacity of the heat collection tube is improved, and the heat collection efficiency of the solar heat collection tube is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to solar energy heat collecting pipe technical field, concretely is a kind of heat pipe and solar energy heat collecting pipe of built-in phase change liquid. BACKGROUND

[0002] Solar energy heat collecting pipe is by the inner glass tube with solar selective absorption coating and coaxial cover glass tube, and high vacuum is extracted between inner and outer tube interlayer, for collecting solar heat to heat the device of fluid medium in pipe.If a number of full glass vacuum solar energy heat collecting pipes are arranged in array with certain rule and are assembled into solar energy heat collector with union pipe, tailstock and reflector etc.;With circulating pipeline, water storage tank and other components, it forms split type solar energy hot water system.

[0003] Common solar energy heat collecting pipe is internally inserted with heat pipe, and the inside of heat pipe is double-layer structure and filled with phase change liquid, to enhance the heat transfer effect of solar energy heat collecting pipe, but this way, since heat pipe and heat collecting pipe are straight pipe type structure, after filling phase change liquid, not only the contact area of heat pipe with outside is small, but also phase change liquid cannot form specific flow path in heat pipe, thereby reducing the convective heat transfer coefficient of phase change liquid, reducing heat exchange effect, cannot meet the working requirements of solar energy heat collecting pipe, therefore, a kind of heat pipe and solar energy heat collecting pipe of built-in phase change liquid are presented. UTILITY MODEL CONTENT

[0004] (I) technical problem solved

[0005] In view of the deficiencies of prior art, the utility model provides a kind of heat pipe and solar energy heat collecting pipe of built-in phase change liquid, to solve the technical problem that since heat pipe and heat collecting pipe are straight pipe type structure, after filling phase change liquid, not only the contact area of heat pipe with outside is small, reduces heat exchange effect.

[0006] (II) technical scheme

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a kind of heat pipe of built-in phase change liquid, comprising:

[0008] Mounting disc, the right side of the mounting disc is equipped with phase change liquid inner heat pipe, the outside of the phase change liquid inner heat pipe is equipped with spiral cavity;

[0009] Return pipe, inserted in the inside of phase change liquid inner heat pipe, phase change liquid inner heat pipe and return pipe are left with filling cavity between, and the inside of filling cavity is filled with phase change liquid, the inside of return pipe is inserted with sealing plug.

[0010] Preferably, the diameter of the return pipe is less than the diameter of the phase change liquid inner heat pipe, and the inner cavity of the spiral cavity is communicated with the inner cavity of the phase change liquid inner heat pipe.

[0011] Preferably, the outer end of the sealing plug is provided with a sealing disc, the left side of the sealing disc is provided with a snap ring, and the inner and outer diameters of the snap ring are matched with the diameter of the filling cavity.

[0012] Preferably, the inner side of the sealing disc is clamped with a sealing washer, and the middle of the outer side of the sealing disc is provided with a push piece.

[0013] A solar heat collecting pipe comprises the mounting disc and the phase-change liquid inner heat pipe, the outer part of the phase-change liquid inner heat pipe is provided with a solar heat collecting outer pipe, the left end of the solar heat collecting outer pipe is connected with the right side of the mounting disc, the outer part of the upper side of the phase-change liquid inner heat pipe is provided with a vacuum nozzle, and the outer part of the solar heat collecting outer pipe is provided with a fin ring.

[0014] Preferably, the number of the fin rings is 4-8 groups, the cross-sectional shape of the fin rings is triangular, and the outer end of the fin rings is round.

[0015] (Three) beneficial effects

[0016] Compared with the prior art, the heat pipe with phase-change liquid and the solar heat collecting pipe have the following beneficial effects:

[0017] 1. The heat pipe with phase-change liquid and the solar heat collecting pipe, the spiral cavity added to the outer part of the phase-change liquid inner heat pipe can increase the contact area between the phase-change liquid inner heat pipe and the outside, so that the phase-change liquid inner heat pipe can exchange heat with the surrounding environment more fully, the heat exchange efficiency is improved, the spiral cavity can guide the phase-change liquid to form a specific flow path in the pipe, the fluid is continuously disturbed and mixed in the flow process, so that the convective heat transfer coefficient of the phase-change liquid is improved, the heat exchange effect is enhanced, and after the phase-change liquid is filled, the pressure in the phase-change liquid inner heat pipe is more stable, and the problem of unstable performance of the phase-change liquid inner heat pipe caused by insufficient or excessive phase-change liquid is reduced.

[0018] 2. The heat pipe with phase-change liquid and the solar heat collecting pipe, the fin ring added to the outer part of the solar heat collecting outer pipe can increase the surface area of the heat collecting outer pipe, improve the solar energy absorption capacity of the heat collecting pipe, and improve the heat collecting efficiency of the solar heat collecting pipe, and the existence of the fin ring can destroy the boundary layer on the surface of the solar heat collecting outer pipe, so that the air forms strong convection between the fins, thereby improving the convective heat transfer coefficient of the solar heat collecting outer pipe and the surrounding air, and enhancing the heat exchange effect. BRIEF DESCRIPTION OF DRAWINGS

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

[0020] Figure 2 It is a structural schematic view of the phase-change liquid inner heat pipe of the utility model;

[0021] Figure 3 It is a structure schematic view of the phase change liquid inner heat pipe and the return pipe of the utility model.

[0022] Figure 4 It is a structure schematic view of the sealing plug of the utility model.

[0023] In the figure: 1, mounting disc; 2, solar heat collecting outer pipe; 3, vacuum nozzle; 4, fin ring; 5, phase change liquid inner heat pipe; 6, spiral cavity; 7, return pipe; 8, filling cavity; 9, sealing plug; 10, sealing disc; 11, snap ring; 12, push piece. DETAILED DESCRIPTION

[0024] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0025] The utility model provides a kind of technical scheme, a heat pipe and solar heat collecting pipe with built-in phase change liquid, including mounting disc 1, solar heat collecting outer pipe 2, vacuum nozzle 3, fin ring 4, phase change liquid inner heat pipe 5, spiral cavity 6, return pipe 7, filling cavity 8, sealing plug 9, sealing disc 10, snap ring 11 and push piece 12:

[0026] Please refer to Figure 1 , the right side of mounting disc 1 is equipped with solar heat collecting outer pipe 2, the outside upper side of solar heat collecting outer pipe 2 is equipped with vacuum nozzle 3, the outside of solar heat collecting outer pipe 2 is equipped with fin ring 4, the number of fin ring 4 is 4-8 groups, the cross-sectional shape of fin ring 4 is all set as triangle, the outer end of fin ring 4 is all set as round angle, the surface area of solar heat collecting outer pipe 2 can be increased by the fin ring 4 additionally arranged on the outside of solar heat collecting outer pipe 2, the absorption capacity of solar heat collecting outer pipe 2 to solar energy is improved, so as to improve the heat collecting efficiency of solar heat collecting pipe 2, and the existence of fin ring 4 can destroy the boundary layer on the surface of solar heat collecting outer pipe 2, so that air forms strong convection between fins, so as to improve the convective heat transfer coefficient of solar heat collecting outer pipe 2 and surrounding air, and enhance heat exchange effect;

[0027] Please refer to Figure 2 And Figure 3 Phase change liquid inner heat pipe 5, insert in the inside of solar heat collecting outer pipe 2, the outside of phase change liquid inner heat pipe 5 is equipped with spiral cavity 6.

[0028] The reflux pipe 7 is inserted in the phase-change liquid heat pipe 5, and the phase-change liquid heat pipe 5 and the reflux pipe 7 are provided with a filling cavity 8, and the filling cavity 8 is filled with phase-change liquid. Please refer to Figure 4 The reflux pipe 7 is inserted in the phase-change liquid heat pipe 5, and the phase-change liquid heat pipe 5 and the reflux pipe 7 are provided with a filling cavity 8, and the filling cavity 8 is filled with phase-change liquid. Please refer to The spiral cavity 6 added outside the phase-change liquid heat pipe 5 can increase the contact area of the phase-change liquid heat pipe 5 with the outside, so that the phase-change liquid heat pipe 5 can fully exchange heat with the surrounding environment, improve the heat exchange efficiency, and the added spiral cavity 6 can guide the phase-change liquid to form a specific flow path in the pipe, so that the fluid is continuously disturbed and mixed in the flow process, thereby improving the convective heat transfer coefficient of the phase-change liquid and enhancing the heat exchange effect. At the same time, the added spiral cavity 6 can make the pressure inside the phase-change liquid heat pipe 5 more stable after being filled with phase-change liquid, reducing the problem of unstable performance of the phase-change liquid heat pipe 5 caused by insufficient or excessive phase-change liquid.

[0029] The spiral cavity 6 added outside the phase-change liquid heat pipe 5 can increase the contact area of the phase-change liquid heat pipe 5 with the outside, so that the phase-change liquid heat pipe 5 can fully exchange heat with the surrounding environment, improve the heat exchange efficiency, and the added spiral cavity 6 can guide the phase-change liquid to form a specific flow path in the pipe, so that the fluid is continuously disturbed and mixed in the flow process, thereby improving the convective heat transfer coefficient of the phase-change liquid and enhancing the heat exchange effect. At the same time, the added spiral cavity 6 can make the pressure inside the phase-change liquid heat pipe 5 more stable after being filled with phase-change liquid, reducing the problem of unstable performance of the phase-change liquid heat pipe 5 caused by insufficient or excessive phase-change liquid.

[0030] It is to be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0031] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A heat pipe having a phase change liquid built in, characterized by, Include: The installation disc (1), the right side of the installation disc (1) is equipped with phase change liquid heat pipe (5), the outside of phase change liquid heat pipe (5) is equipped with spiral cavity (6); The return pipe (7) is inserted in the inside of phase change liquid heat pipe (5), the phase change liquid heat pipe (5) and the return pipe (7) between the filling cavity (8) are left, and the inside of the filling cavity (8) is filled with phase change liquid, the inside of the return pipe (7) is inserted with sealing plug (9).

2. A heat pipe with a phase change liquid built-in according to claim 1, characterized in that: The diameter of the return pipe (7) is less than the diameter of phase change liquid heat pipe (5), the inner cavity of spiral cavity (6) is communicated with the inner cavity of phase change liquid heat pipe (5).

3. A heat pipe with a phase change liquid built-in according to claim 1, characterized in that: The outer end of sealing plug (9) is equipped with sealing disc (10), the left side of sealing disc (10) is equipped with snap ring (11), the inner and outer diameter of snap ring (11) is matched with the diameter of filling cavity (8).

4. A heat pipe with a phase change liquid built-in according to claim 3, characterized in that: The inner side of sealing disc (10) is clamped with sealing washer, the outer side of sealing disc (10) is equipped with the middle part of the installation of the tab (12).

5. A solar heat collector tube comprising the mounting disc (1) of claim 1 and a phase change liquid inner heat pipe (5), characterized in that: The outside of phase change liquid heat pipe (5) is equipped with solar heat collecting outer tube (2), and the left end of solar heat collecting outer tube (2) is connected with the right side of installation disc (1), the outside of phase change liquid heat pipe (5) is equipped with vacuum nozzle (3), the outside of solar heat collecting outer tube (2) is equipped with fin ring (4).

6. A solar collector tube according to claim 5, wherein: The number of fin ring (4) is 4-8 groups, the cross section shape of fin ring (4) is all set to triangle, the outer end of fin ring (4) is all set to round corner.

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