CN2175904Y

CN2175904Y - Double-glass vacuum hot pipe solar heat-collecting element

Info

Publication number: CN2175904Y
Application number: CN93207675U
Authority: CN
Inventors: 刘桂林; 石多田; 霍亚美; 李元哲
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-03-31
Filing date: 1993-03-31
Publication date: 1994-08-31
Anticipated expiration: 2003-03-31

Abstract

The utility model relates to a double-glass vacuum heat-pipe solar heat-collecting element. A double-layer structure is composed of inner layer glass and outer layer glass, and the middle of the inner layer glass and the outer layer glass is a vacuum layer. A heat pipe is arranged in the inner layer glass, and the absorption end of the inner layer glass and the surface of the heat pipe are coated with selective absorption films. The heat pipe is sealed by a silicone rubber sealing element, and is fixed by a screw nut. The condensing end of the heat pipe is extended out of the outside of a glass tube, and a fin can be in a disk shape or a blade shape.

Description

Double-glass vacuum hot pipe solar heat-collecting element

The utility model relates to a kind of double-glass vacuum pipe heat pipe solar thermal collector spare, belongs to the technical field of solar energy equipment.

At present mainly contain two kinds of devices that collecting efficiency is higher aspect utilizing at solar energy, just vacuum heat collection pipe and hot pipe type solar heat collector, vacuum heat collection pipe is to be coated with the last layer absorbing film on the outer wall of inner layer glass tube, make medium in pipe, carry out cold and hot exchange, its major defect is that glass tube is unable to bear cold and hot impact blasted pipe phenomenon easily takes place, perhaps in-tube fouling and thin hole vapour lock, and flowing water is not smooth etc., and product cost is high slightly, and these all make applying of it be restricted.

Form a vacuum layer (2) between glass outer of vacuum heat collection pipe (1) and the inner layer glass (3), scribble one deck absorbing film (8), cold and hot medium (7) (referring to Fig. 1) is housed in inner layer glass (3) again at the outer surface of inner layer glass (3).

The purpose of this utility model is that a kind of double-glass vacuum pipe heat pipe solar thermal collector spare will be provided, it adopts the structure of double-layer glass tube, between ectonexine, form a vacuum layer, finned heat pipe is housed in pipe again, overcome the shortcoming of above-mentioned vacuum heat collection pipe and heat pipe-type thermal-collecting tube, can not take place that glass tube bursts or shortcoming such as fouling.Heat-collecting effect improves, and cost also reduces, is convenient to promote the use of.

The purpose of this utility model is to realize like this, adopt the structure of double-layer glass tube, between the ectonexine transparent glass tube, form a vacuum layer, heat pipe is housed in the pipe, one end of heat pipe also is equipped with fin, is coated with one deck selective absorbing film at fin and heat pipe surface, and the mouth of pipe adopts silicone rubber seal, make in the pipe and can keep high temperature, heat can not leak.

Selective absorption film changes the sunshine that absorbs into heat and concentrates in the pipe, heat pipe can pass to release end of heat to heat and medium carries out the exchange of heat, and heat pipe is not contained in the vacuum layer, and the sealing-in problem just is easy to solve, heated medium does not flow through vacuum layer yet, does not just have the shortcoming of leaking.

Fig. 1 vacuum heat collection pipe schematic diagram

The two clear glass vacuum-tube heat-pipe solar energy heating device schematic diagrames of Fig. 2

Fig. 3 disc fin schematic diagram

Fig. 4 vane type fin schematic diagram

Now in conjunction with the accompanying drawings the structure of double-glass vacuum pipe heat pipe solar thermal collector spare is described in detail:

By Fig. 2, adopt the structure of double-layer glass tube, form one deck vacuum layer (2) between outer layer glass tube (1) and the inner layer glass tube (3), heat pipe (5) is contained in the inner layer glass tube (3), the heat absorbing end of heat pipe (5) is equipped with heat absorption fin (4), and heat pipe (5) and heat absorption fin (4) surface all scribble absorbing film, and heat pipe (5) diameter major part has screw thread, fixing with nut (10), the condensation end of heat pipe (7) stretches out in the glass tube outside.

Fig. 3 is a disc fin schematic diagram

The heat absorbing end of heat pipe (5) is connected with a disc fin (11).

Fig. 4 is a vane type fin schematic diagram

The heat absorbing end of heat pipe (5) is connected with the fin (12) of a blade shape.

Heat pipe (5) and fin (4), (11), (12) surface all scribble selective absorbing film, mainly adopt black chromium, black nickel or aluminium nitrogen aluminium, and the absorbing film life-span of wherein deceiving chromium is longer, endothermic effect, and aluminium nitrogen aluminium film cost is high slightly, but performance is also more excellent.Heat pipe (5) is used the metal material manufacturing, and near the position of condensation end, diameter is thick slightly, has pin thread, and is fixing with nut (10).

Compared with prior art, double-glass vacuum pipe heat pipe solar thermal collector spare has following advantages:

1, adopt the double glazing tubular construction, form a vacuum layer between the ectonexine, the heat pipe heat absorbing end is equipped with fin, and heat pipe and fin all are contained in the pipe, and scribble the optional membrane, and such as black chromium, black nickel or aluminium nitrogen aluminium, the life-span is long, and endothermic effect is good.

2, good sealing effect.

3, medium does not have any leakage without vacuum layer.

4, simple in structure, the maintenance easy.

Claims

1, a kind of double-glass vacuum pipe heat pipe solar thermal collector spare, the structure that it is characterized in that outer layer glass tube (1) and inner layer glass tube (3) composition pair of lamina clear glass, form a vacuum layer (2) between the ectonexine, heat pipe (5) is contained in the inner layer glass tube (3), the heat absorbing end of heat pipe (5) is equipped with heat absorption fin (4), heat pipe (5) and fin (4) surface all are coated with absorbing film (8), interior outer glass pipe (1), silicone rubber seal (6) sealing of (3) end, use nut (10) fixing again, the condensation end (7) of heat pipe (5) stretches out in the outside of glass tube.

2, heat collection device according to claim 1 is characterized in that heat pipe is that metal material is made.

3, heat collection device according to claim 1 is characterized in that fin (4) is disc fin (11).

4, heat collection device according to claim 1 is characterized in that fin (4) is vane type fin (12).

5, heat collection device according to claim 1, it is characterized in that selecting absorbing film is black chromium, black nickel or aluminium nitrogen aluminium.