CN210425589U

CN210425589U - Solar heat transmission device

Info

Publication number: CN210425589U
Application number: CN201920792138.8U
Authority: CN
Inventors: 周园园; 娄滨; 谢维思
Original assignee: Guangzhou Juneng Solar Energy Technology Co ltd
Priority date: 2019-05-29
Filing date: 2019-05-29
Publication date: 2020-04-28
Anticipated expiration: 2029-05-29

Abstract

The application discloses solar thermal energy transmission device includes: a glass tube, a metal condenser head and a light absorbing coating; the glass tube has a structure with one end sealed and the other end opened; the open end of the glass tube is sealed with the metal condenser head; vacuumizing the interior of the glass tube, and arranging a heat transfer medium; the light absorbing coating is coated on the outer wall of the glass tube. Solar thermal transmission device in this application, the mode that adopts glass pipe and metal condenser head to seal carries out solar thermal transmission, no longer use evaporating terminal and integrative the mode that is the copper pipe of condensing end, the higher copper pipe material of cost has been reduced, production cost is reduced, simultaneously, with the inside evacuation of glass pipe, and be equipped with heat transfer working medium, carry out solar energy collection at glass intraductal outer wall coating light absorption coating, the collection temperature is higher, heat conduction efficiency is higher, the current solar thermal transmission device with high costs and the lower technical problem of heat conduction efficiency have been solved.

Description

Solar heat transmission device

Technical Field

The application relates to the technical field of solar heat collection, in particular to a solar heat transmission device.

Background

At present, solar energy is widely used as a clean energy source, and the conversion of solar energy into heat energy becomes a popular research direction.

The heat pipe technology is a widely applied heat transfer technology, and is a technology for rapidly conducting heat by utilizing the phase change process of medium evaporation at a hot end and then condensation at a cold end, namely by utilizing the latent heat of evaporation and the latent heat of condensation of liquid. When the evaporation end of the heat pipe is heated, the liquid in the capillary tube is quickly vaporized, vapor flows to the condensation end under the power of thermal diffusion, heat is released at the condensation end, and the liquid flows back to the evaporation end along the porous material under the action of capillary, so that the circulation is performed, and the temperatures of the two ends of the heat pipe are guided to be equal.

In a heat pipe used in a conventional heat transport device, a heat absorbing body is made of metal, generally made of copper, and although the heat pipe has high heat collecting efficiency, the heat pipe has high cost. In view of cost reduction, an all-glass heat pipe is provided, for example, patent publication No. CN1121577A discloses an all-glass heat pipe type vacuum heat collector which is suitable for use in the fields of providing hot water, boiling water, heating, drying, solar houses, air conditioning, refrigeration, ice making, water pumping, power generation, seawater desalination and the like by using solar energy as an energy source, and can be used as an all-weather collection solar heat collection component. However, the condensing end of the all-glass heat pipe is made of glass, so that the heat conduction efficiency is low and the heat collection temperature is low, and therefore, the heat pipe is not an ideal heat transfer device.

SUMMERY OF THE UTILITY MODEL

The application provides a solar heat transfer device for solve current solar heat transfer device with high costs and the lower technical problem of heat conduction efficiency.

In view of this, the present application provides a solar heat transfer apparatus, comprising: a glass tube, a metal condenser head and a light absorbing coating;

the glass tube is of a structure with one end sealed and the other end opened;

the open end of the glass tube is connected with the metal condenser head in a sealing manner;

the interior of the glass tube is vacuumized and is provided with a heat transfer medium;

the light absorbing coating is coated on the outer wall of the glass tube.

Preferably, an expansion joint is arranged at the sealing part of the metal condensation head and the glass tube.

Preferably, the open end of the glass tube has a tapered structure.

Preferably, the metal condensation head is made of copper.

Preferably, the heat transfer working medium is alcohol.

Preferably, the number of the expansion joints is not less than 2.

Preferably, the open end of the glass tube is connected with the metal condenser head through hot press sealing.

Preferably, the open end of the glass tube is in melt-sealed connection with the metal condenser head.

According to the technical scheme, the method has the following advantages:

a solar thermal transmission device provided in the present application, comprises: a glass tube, a metal condenser head and a light absorbing coating; the glass tube has a structure with one end sealed and the other end opened; the open end of the glass tube is sealed with the metal condenser head; vacuumizing the interior of the glass tube, and arranging a heat transfer medium; the light absorbing coating is coated on the outer wall of the glass tube. Solar thermal transmission device in this application, the mode that adopts glass pipe and metal condenser head to seal carries out solar thermal transmission, no longer use evaporating terminal and integrative the mode that is the copper pipe of condensing end, the higher copper pipe material of cost has been reduced, production cost is reduced, simultaneously, with the inside evacuation of glass pipe, and be equipped with heat transfer working medium, carry out solar energy collection at glass intraductal outer wall coating light absorption coating, the collection temperature is higher, heat conduction efficiency is higher, the current solar thermal transmission device with high costs and the lower technical problem of heat conduction efficiency have been solved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a schematic structural diagram of a solar heat transfer apparatus provided herein;

wherein the reference numerals are:

1. a metal condenser head; 2. an expansion joint; 3. a glass tube; 4. a heat transfer working medium; 5. a light absorbing coating.

Detailed Description

The embodiment of the application provides a solar heat transmission device, which is used for solving the technical problems of high cost and low heat conduction efficiency of the existing solar heat transmission device.

In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the embodiments of the present application and simplifying the description, but do not indicate or imply that the referred devices or elements must have specific orientations, be configured in specific orientations, and operate, and thus, should not be construed as limiting the embodiments of the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present application, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected unless explicitly stated or limited otherwise; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. Specific meanings of the above terms in the embodiments of the present application can be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1, the present application provides an embodiment of a solar heat transfer apparatus, and the solar heat transfer apparatus provided in the embodiment of the present application includes: a glass tube 3, a metal condenser head 1 and a light absorbing coating 5;

the glass tube 3 is of a structure with one end sealed and the other end opened;

the open end of the glass tube 3 is sealed with the metal condenser head 1;

the inside of the glass tube 3 is vacuumized and is provided with a heat transfer working medium 4;

a light absorbing coating 5 is applied on the outer wall of the glass tube 3.

It should be noted that in the solar heat transfer device in the embodiment of the present application, the evaporation end is a glass tube 3 with an opening at one end and a sealed end, the condensation end is a metal condensation head 1, a light absorption coating 5 is coated on the outer wall of the glass tube 3, the light absorption coating 5 absorbs solar energy onto the glass tube 3, the inside of the glass tube 3 is vacuumized and contains a heat transfer working medium 4, the heat transfer working medium 4 is heated and then evaporated to the condensation end, heat is transferred to the condensation end, the metal condensation head 1 at the condensation end transfers heat to a designated position to complete utilization of heat energy, the heat transfer working medium 4 at the condensation end is cooled and then flows back to the evaporation end, and the heat transfer mode of the glass tube 3 and the metal condensation head 1 avoids the problem of high cost caused by the fact that both the evaporation end and the condensation end adopt; the open end of the glass tube 3 is sealed with the metal condenser head 1 in a fusion sealing mode.

The solar thermal transmission device that provides in the embodiment of this application includes: a glass tube 3, a metal condenser head 1 and a light absorbing coating 5; the glass tube 3 is of a structure with one end sealed and the other end opened; the open end of the glass tube 3 is sealed with the metal condenser head 1; the inside of the glass tube 3 is vacuumized and is provided with a heat transfer working medium 4; a light absorbing coating 5 is applied on the outer wall of the glass tube 3. Solar thermal transmission device in this application, the mode that adopts glass pipe 3 and metal condensation head 1 to melt and seal carries out solar thermal transmission, the integrative mode that is the copper pipe of evaporating end and condensation end no longer uses, the higher copper pipe material of cost has been reduced, production cost is reduced, simultaneously, with the inside evacuation of glass pipe, and be equipped with heat

transfer working medium

4, 3 outer wall coating light absorption coatings of glass pipe 5 carry out solar energy collection, the collecting temperature is higher, heat conduction efficiency is higher, the current solar thermal transmission device with high costs and the lower technical problem of heat conduction efficiency have been solved.

As an improvement, the solar heat transfer device provided in the embodiment of the application is provided with an expansion joint 2 at the sealing part of the metal condensation head 1 and the glass tube 3.

It should be noted that, when the solar heat transfer device provided in this embodiment of the present application is used in practice, when the heat collection temperature is high, the metal condensation head 1 has a problem of bending deformation, and if the problem of bending deformation of the metal condensation head 1 cannot be solved in time, the service life of the solar heat transfer device will be affected, therefore, in order to improve the reliability of the solar heat transfer device in this embodiment of the present application, and prolong the service life, in this embodiment of the present application, the expansion joint 2 is provided at the sealing joint between the metal condensation head 1 and the glass tube 3, and under the effect of the expansion joint 2, when the condensation end is heated, the expansion joint can consume the deformation force of the condensation end due to heating, thereby avoiding the problem of bending deformation.

As an improvement, the number of the expansion joint 2 is not less than 2.

It should be noted that, in order to further ensure that the condensation end does not generate bending deformation, the number of the expansion joint 2 is set to be at least two, and it is understood that, on the basis of the embodiment of the present application, a person skilled in the art can appropriately adjust the number of the setting joints and the position of the expansion joint 2 according to the actual application.

As a modification, the open end of the glass tube 3 has a tapered structure.

It should be noted that, the open end of the glass tube 3 in the embodiment of the present application may be set to be a tapered structure, which is beneficial to heat collection of heat transferred from the evaporation end, and meanwhile, facilitates the sealing connection between the metal condenser head 1 and the glass tube 3, and reduces the sealing area between the metal condenser head 1 and the glass tube 3.

As a modification, the metal condenser head 1 is made of copper.

It should be noted that the copper material has a high heat conductivity coefficient, and the use of copper as the metal condensation head 1 is beneficial to improving the heat collection temperature and the heat conduction efficiency.

As an improvement, the heat transfer working medium 4 is alcohol.

It should be noted that, in the embodiment of the present application, alcohol is used as a main component of the heat transfer working medium 4, so that the evaporation effect is good, and the heat transfer efficiency is high.

As an improvement, the open end of the glass tube is connected with a metal condenser head through hot press sealing.

As an improvement, the open end of the glass tube is connected with a metal condenser head in a sealing mode.

The traditional metal and glass sealing process adopts a hot-press sealing technology, the metal with better plasticity is used as a welding flux by the hot-press sealing technology, a metal sealing cover and a glass tube are sealed together under the conditions of heating and pressurizing, when the temperature of the welding flux reaches above 100 ℃, a chemical reaction can occur to cause the breakage and air leakage of the sealing part of the glass and the metal of a vacuum tube, and the temperature above 100 ℃ cannot be achieved, and the heat collection temperature of the solar heat transmission device provided by the embodiment of the application can be increased to above 100 ℃ without damaging the heat transmission device by adopting a melt-seal connection mode of a metal condensation head 1 and a glass tube 3, so that the requirement that the heat collection temperature of the solar heat transmission device is 50-150 ℃ can be met.

To sum up, the solar heat transfer device that provides in this application embodiment, compared with prior art, has following advantage:

1) the solar heat transfer device with the metal condensation head has the advantages that the efficiency is improved compared with that of a full-glass heat pipe type vacuum pipe due to the high heat conduction efficiency of the metal condensation end;

2) the glass tube solar heat transfer device with the metal condensation head has the advantages that the evaporation end is the glass tube, the condensation end is the metal condensation head, and the problem of high cost caused by the fact that the existing evaporation end and the existing condensation end are both copper tubes is solved;

3) the glass tube solar heat transmission device with the metal condensation head adopts a fusion sealing process with the glass tube, and metal and glass are directly fused and sealed, so that the heat collection temperature is increased to more than 100 ℃ without damaging the tube;

4) the heat collecting temperature of the glass tube solar heat transmission device with the metal condensing head can be widely applied to the heating field of 50-150 ℃.

The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.

Claims

1. A solar thermal transfer apparatus, comprising: a glass tube, a metal condenser head and a light absorbing coating;

the glass tube is of a structure with one end sealed and the other end opened;

the open end of the glass tube is sealed with the metal condenser head;

the light absorbing coating is coated on the outer wall of the glass tube.

2. The solar thermal transfer device of claim 1, wherein an expansion joint is disposed at the sealing between the metal condenser head and the glass tube.

3. Solar thermal transfer device according to claim 1, wherein the open end of the glass tube is of a tapered configuration.

4. Solar thermal transfer device according to claim 1, wherein the metal condenser head is made of copper.

5. Solar thermal transfer device according to claim 1, wherein the heat transfer medium is alcohol.

6. Solar thermal transfer apparatus according to claim 2, wherein the number of expansion joints is not less than 2.

7. Solar thermal transfer device according to claim 1, wherein the open end of the glass tube is connected to the metal condenser head by heat sealing.

8. Solar thermal transfer device according to claim 1, wherein the open end of the glass tube is in melt-sealed connection with the metal condenser head.