CN2569038Y

CN2569038Y - Solar vacuum thermotube

Info

Publication number: CN2569038Y
Application number: CN02264252U
Authority: CN
Inventors: 吴锡波
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-09-06
Filing date: 2002-09-06
Publication date: 2003-08-27
Anticipated expiration: 2012-09-06

Abstract

The utility model relates to a solar vacuum heat pipe, belonging to the heat collecting components in solar energy application areas. The utility model is composed of a horizontally placed glass cylinder body of which the outer part is provided with a vacuum sandwich layer and the single end is provided with an opening and a metal heat pipe which is sheathed on the inner part of the glass cylinder body, and the glass cylinder body and the metal heat pipe mutually support by a supporting card. In the utility model, the opening end of the glass cylinder body is provided with a sealing plug; the evaporating section of the heat pipe penetrates out from the sealing plug and is connected with an isothermal heat conducting section, a liquid returning pipe and a condensing section through a steam expelling opening and a liquid entering opening which are on the sealing plug; the position of the condensing section is higher than the position of the evaporating section. The glass cylinder body with the vacuum sandwich layer just likes an elongated big vacuum bottle and forms a favorable heat insulating layer for the metal heat pipe, a heated steam working medium and a refluxing liquid working medium in the evaporating section of the heat pipe go into or out the evaporating section from two ways, and the flow of the working mediums is expedite enhancing heat efficiency. The solar vacuum heat pipe provided by the utility model has the advantages of high heat efficiency, low hardness of manufacturing technique, low cost and convenient repair.

Description

Solar energy evacuated heat pipe

Affiliated technical field

The utility model belongs to the solar energy heating parts in the Application of Solar Energy field, particularly a kind of solar energy evacuated heat pipe

Technical background

Along with the enhancing of people's environmental protection and energy saving consciousness, people are more and more deep to the value understanding of solar energy.Heat-collecting part is again the basic element of character that people absorb solar heat.Because the thermal conversion rate high heat pipe technology of heat pipe has been widely used in the solar energy heating parts.The invention of vacuum heat-pipe makes the thermal efficiency of solar energy heat collection pipe mention a new level.The higher heat pipe by inside of the vacuum heat-pipe efficient of using is formed with the glass tube that is enclosed within the heat pipe outside now.It between the inner and outer pipes vacuum cavity, the thermal efficiency height of this heat pipe, but because the technology big, that requirement vacuumizes of the cavity between the inner and outer pipes is higher, the manufacturing process difficulty is also higher, thereby production cost height, in addition because as the not easy-maintaining that encounters problems is also had relatively high expectations in the shutoff between metal and the glass.

Summary of the invention

The purpose of this utility model is to provide a kind of thermal efficiency height, but, the solar energy evacuated heat pipe that manufacturing process is not difficult, production cost is lower, be convenient to keep in repair.

The purpose of this utility model is finished by following technical proposals; Solar energy evacuated heat pipe provided by the utility model, form by the glass tube of outside and the metal heat pipe that is enclosed within the glass tube, the two holds mutually by support card, be characterized in that outside glass tube is that vacuum interlayer is arranged, single-ended opening, the glass cylindrical shell of horizontal positioned, the openend of glass cylindrical shell has a shutoff, the evaporator section of metal heat pipe holds mutually by the glass cylindrical shell of support card with the band vacuum interlayer, the evaporator section of metal heat pipe is by the venthole on it, inlet joins with isothermal heat conduction section and liquid back pipe, and join by them and condenser, the horizontal level of condenser is higher than evaporator section.

Operation principle of the present utility model is as follows: sunshine has the glass cylindrical shell of vacuum interlayer, single-ended opening, horizontal positioned to shine on the evaporator section of metal heat pipe by the outside, be contained in after working medium in the metal heat pipe is subjected to thermal evaporation to become gaseous working medium, reach the higher condenser in position through isothermal heat conduction section, after carrying out heat exchange liquefy working medium with heated material, by the effect of gravity, flow back to evaporator section through liquid back pipe from inlet, be heated again, evaporate ... and so forth, carry out the circulation of heat.Because the glass cylindrical shell of band vacuum interlayer is a horizontal positioned, therefore, the evaporator section of metal heat pipe also is a horizontal positioned, working medium in the heat pipe is distributed in the below of evaporator section equably, the heating surface area of working medium increases, and has improved the thermal efficiency, if this solar energy evacuated heat pipe and the supporting use of optically focused reflecting surface from the motion tracking sun, the metal heat pipe is on the focal line of optically focused reflecting surface all the time, and the thermal efficiency of this heat pipe will be higher.The glass cylindrical shell of band vacuum interlayer is just as a big thermos bottle that has been elongated, the metal fever pipe is formed good thermal insulation layer, make its heat that absorbs be difficult for being dispersed into the external world, because evaporator section is provided with the venthole and the inlet that can join with isothermal heat conduction section, liquid back pipe, make working medium that is subjected to thermal evaporation and the liquid refrigerant that carries out refluxing after the heat exchange at condenser go out, go into heat pipe evaporator section from two-way respectively, working medium mobile unimpeded is convenient to the carrying out of thermal cycle, improved the thermal efficiency.Because the thermal insulation layer of metal heat pipe has adopted the glass of vacuum interlayer, single-ended opening cylindrical shell is arranged, its technology is just as widening vacuum flask, belong to common process, technology difficulty is not high, because outside glass cylindrical shell is a vacuum interlayer, so, sealing property to the shutoff of glass cylindrical shell openend requires also not high, reduce the difficulty of manufacturing process, simultaneously, also reduced production cost.Because the sealing property to the shutoff of glass cylindrical shell openend is less demanding, therefore keep in repair more convenient.

Solar energy evacuated heat pipe provided by the utility model has the advantage that the thermal efficiency is higher, manufacturing process is not difficult, production cost is lower, be convenient to keep in repair.

Description of drawings:

Fig. 1 is the structural representation that the utility model provides vacuum heat-pipe embodiment one;

Fig. 2 is an A-A profile among Fig. 1;

Fig. 3 is the structural representation that the utility model provides vacuum heat-pipe embodiment two;

Fig. 4 is an A-A profile among Fig. 4.

Among Fig. 1, Fig. 2: 1, the glass cylindrical shell of transparent vacuum interlayer is arranged, 2, the metal heat pipe, 2.1, the evaporator section of metal heat pipe, 2.2, the isothermal heat conduction section of metal heat pipe, 2.3, the condensation segment of metal heat pipe, 2.4, liquid back pipe, 2.5, venthole, 2.6, inlet, 3, support card, 4, shutoff

Among Fig. 3, Fig. 4: the glass cylindrical shell that 1, the transparent vacuum interlayer is arranged, 2, metal heat pipe, 2.1, the evaporator section of metal heat pipe, 2.11, the heat absorption fin that is equipped with on the evaporator section of metal heat pipe, 2.2, the isothermal heat conduction section of metal heat pipe, 2.3, the condensation segment of metal heat pipe, 2.4, liquid back pipe, 2.5, venthole, 2.6, inlet, 3, support card, 4, shutoff

The specific embodiment

Further specify enforcement of the present utility model: Fig. 1, Figure 2 shows that the structural representation of the utility model embodiment one below in conjunction with accompanying drawing, among the figure: metal heat pipe 2 is installed in the glass cylindrical shell of vacuum interlayer by support card 3, the evaporator section 2.1 of metal heat pipe is in the glass cylindrical shell, from the equipped shutoff 4 of glass cylindrical shell 1 one ends, stretch out, join with isothermal heat conduction section 2.2 and liquid back pipe 2.4 by the venthole on it 2.5, inlet 2.6, and join by them and condenser 2.3, the horizontal level of condenser is higher than evaporator section.There is the glass cylindrical shell 1 of vacuum interlayer to adopt the heat resistant glass of the high grade of transparency to make, metal heat pipe 2 adopts the heat conductivility preferred metal, can adopt stainless steel to make and also can adopt copper material, the diameter of its evaporator section be have vacuum interlayer glass cylindrical shell 1 internal diameter 3/5ths, the heating surface area of heat pipe is bigger, has also improved the thermal efficiency.Metal heat pipe and have the support card 3 between the glass cylindrical shell of vacuum interlayer can adopt stainless steel to make also can adopt copper to do, and shutoff 4 adopts heat resistant rubbers to make.For improving the thermal efficiency of vacuum heat-pipe, in the vacuum interlayer of glass cylindrical shell, select absorption film by plating on the inner surface of metal heat pipe one side, the solar energy of injecting vacuum interlayer is absorbed by absorption film convert heat energy to, air heat with the glass infuser intracoelomic cavity, with the metal heat pipe heating of inside, carry out thermal cycle simultaneously.For preventing thermal loss, all adopt the sealed attachment of empty calory loss in the present embodiment between the evaporator section of heat pipe and isothermal heat conduction section, liquid back pipe and condenser and isothermal heat conduction section, the liquid back pipe.Fig. 3, Figure 4 shows that the structural representation of the utility model embodiment two, its basic structure is identical with embodiment one.In the present embodiment, adopt the U-shaped metal tube to do the evaporator section of heat pipe, venthole 2.5, inlet 2.6 in the two-port of U-shaped evaporator section join with isothermal heat conduction section 2.2 and liquid back pipe 2.4 respectively, isothermal heat conduction section 2.2 and liquid back pipe 2.4 join with condenser again, and its isothermal heat conduction section and liquid back pipe also can adopt flexible metallic hose.For the heat absorption capacity that strengthens the metal heat pipe is equipped with heat absorption fin 2.11 on the evaporator section of U-shaped metal heat pipe, the heat absorption fin wraps in the evaporator section of U-shaped metal heat pipe wherein, the diameter of the heating surface of heat absorption fin is 1/2nd of an outer glass cylinder internal diameter, and the heat absorption fin adopts stainless steel to make or adopt copper material.There is the glass cylindrical shell 1 of vacuum interlayer bright in the present embodiment for full impregnated.For improving the thermal efficiency of vacuum heat-pipe, on the surface of heat absorption fin and metal heat pipe, be coated with heat-absorbing material, sunshine sees through transparent vacuum interlayer and shines on the heat absorption fin, convert collected solar energy to heat energy, promptly pass to heat pipe again, make the working medium in the heat pipe be heated, evaporate, carry out thermal cycle.The flexible metal inner tube layer adopts corrugated stainless steel tubing, and its outside is with the metallic snakeskin pipe, distributes for preventing heat, also can add the heat-insulation layer that one deck is made of alumina silicate fibre at outermost, adopt flexible metallic hose after, make the packing of product, transportation all more convenient.For preventing thermal loss, all adopt the sealed attachment of empty calory loss in the present embodiment between isothermal heat conduction section, liquid back pipe and the condenser of the evaporator section of heat pipe and flexibility and flexible isothermal heat conduction section, the liquid back pipe.

Claims

1, a kind of solar energy evacuated heat pipe, form by the glass tube of outside and the metal heat pipe that is enclosed within the glass tube, the two holds mutually by support card, it is characterized in that outside glass tube is the glass cylindrical shell that vacuum interlayer, single-ended opening, horizontal positioned are arranged, the openend of glass cylindrical shell has a shutoff, the evaporator section of metal heat pipe holds mutually by the glass cylindrical shell of support card with the band vacuum interlayer, the metal heat pipe evaporator section joins with isothermal heat conduction section and liquid back pipe by venthole on it and inlet, and join by them and condenser, the position of condenser is higher than evaporator section.

2, solar energy evacuated heat pipe according to claim 1 is characterized in that the described glass cylindrical shell that vacuum interlayer, single-ended opening are arranged, and selects absorption film near plating on the inner surface of metal heat pipe one side in its vacuum interlayer.

3, solar energy evacuated heat pipe according to claim 1 and 2, the heating surface diameter that it is characterized in that described metal heat pipe evaporator section is greater than 1/2nd of the glass cylinder internal diameter that vacuum interlayer, single-ended opening, horizontal positioned are arranged.

4, solar energy evacuated heat pipe according to claim 1 and 2, the evaporator section that it is characterized in that described metal heat pipe is a U-shaped, the two ends of U-shaped evaporator section join with isothermal heat conduction section, liquid back pipe respectively.

5, solar energy evacuated heat pipe according to claim 4 is characterized in that on the U-shaped evaporator section of described metal heat pipe the heat absorption fin being housed.