CN201093777Y

CN201093777Y - Double glass vacuum tube type solar heat collector

Info

Publication number: CN201093777Y
Application number: CNU200720045506XU
Authority: CN
Inventors: 黄永年
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-08-23
Filing date: 2007-08-23
Publication date: 2008-07-30
Anticipated expiration: 2017-08-23

Abstract

The utility model provides a double layer glass vacuum metal tube type solar energy collector, which relates to a heat utilization technology of solar energy. A metal tube one and a metal tube two are arranged in parallel in an inner glass blind tube in each set of heat-collecting tubes, wherein, the metal tube two is arranged in the metal tube one; the lower end of the metal tube one is a blind end; the metal tube two is a through tube; a gap is arranged between the lower end of the metal tube two and the inner bottom of the metal tube one; metal fins are arranged outside the metal tube one; the opening end of the metal tube passes out of the inner glass blind tube to be supported on the opening end of the inner glass blind tube in an intermittent type, and the opening end of the metal tube two passes out of the opening end of the metal tube one. The elevation of temperature of medium in the metal pipe one of the utility model is fast and high. The effect hot water productive rate and the temperature of the heat transmission medium in a heat storage tank are favorable to be increased, and the filed of the appliance is expanded.

Description

Double-glass evacuated tube formula solar thermal collector

Technical field

The utility model relates to solar energy utilization technique.

Background technology

Utilizing the solar energy heating technology is an environment-friendly type advanced technology that extensively adopts in recent years, be applied on the water heater in large quantities at present, although the structure of various solar thermal collectors is not quite similar, but all be to rely on vacuum heat collection pipe fully to absorb the energy of sunshine, and be translated into heat energy and be transferred to medium (as water).Vacuum heat collection pipe is the heat collecting element that solar thermal collector generally uses.In the prior art, thermal-collecting tube is made of inside and outside glass blind pipe, is evacuated between two pipes, and coated heat-absorbing material on the outer wall of inner tube is full of water in the interior pipe, relies on outer wall of inner tube to absorb solar radiant energy water is heated, and vacuum layer plays insulation effect.In use, this vacuum heat collection pipe is because of there being water all the time in managing, and therefore exists easily to freeze shortcomings such as damages, easy fouling, the thermal efficiency are low.In addition,, has only an end, again as hot water outlet, so the medium in the thermal-collecting tube can not carry out heat exchange with its outer medium swimmingly both as cooling water inlet because this thermal-collecting tube one end is a cecum.Each thermal-collecting tube accumulates heat collector by header again, and this heat collector is difficult for the higher temperature of output because the WATER AS FLOW MEDIUM quantity of internal memory is big.

The utility model content

The utility model purpose is to design a kind of double-glass evacuated tube formula solar thermal collector that can improve the heat transfer medium output temperature significantly.

The utility model comprises at least three case heat-collection pipes, and every case heat-collection pipe comprises two mutual transparent inside and outside glass blind pipes of socket in the same way, and inside and outside two glass blind pipes are in the mutual welding of openend, and between two glass blind pipes vacuum chamber is set.In the interior glass blind pipe of every case heat-collection pipe, all arrange metal tube one and metal tube two, metal tube two is arranged in the metal tube one, the lower end of metal tube one is a cecum, and metal tube two is a straight pipe, and the gap that is interconnected is set at the interior end of the lower end of metal tube two and metal tube one; Outside metal tube one, metal fin is set; The outer also clearance-type of glass blind pipe was supported on the openend of interior glass blind pipe in the openend of metal tube one passed, and the openend of metal tube two passes the openend of metal tube one.

The utility model is by metal tube one and metal tube two special structural design, the lower temperature medium that enters from metal tube two enters metal tube one from the cecum of metal tube one, be outside equipped with metal fin at metal tube one, medium obtains heat energy and heats up in metal tube one, the high-temperature medium that can accelerate in the thermal-collecting tube flows outside thermal-collecting tube; Because the medium amount that is full of fully in the medium amount in the metal tube one and the vacuum tube is compared and is wanted much less, thereby the medium in the metal tube one heats up faster higher, this will help improving the heat collector effective output rate of hot water, help improving the temperature of heat transfer medium in the heat storage box, help enlarging the field that heat collector is used.

Fin described in the utility model can be for radial, and an end is connected on the metal tube one, and the other end is away from metal tube one.

At least two of fins described in the utility model can be connected on the metal tube one by dowel for being circular-arc.

In order to improve the photo-thermal conversion efficiency of medium in the metal tube one, the outer surface of metal fin can be provided with solar energy decalescence films.Sunlight penetration is outer, direct irradiation is on metal tube one and metal fin behind the interior glass blind pipe, and luminous energy converts heat energy to by the solar energy decalescence films on it, by the heat conduction, heat energy is passed to the medium in the metal tube one respectively again.

The utility model also can directly be provided with solar energy decalescence films at the outer surface of interior glass blind pipe.

The utility model also is provided with the optically focused reflecting element between inside and outside two glass blind pipes.The optically focused reflecting element has enlarged daylighting area, and the sunlight after the convergence has also improved energy-flux density, makes the medium temperature of heat collector output be able to further raising, can expand the application space of solar energy in other each field, as high temperature heating, refrigeration, desalinization etc.

The openend of the metal tube two of the every case heat-collection pipe of the utility model stretches out from the openend of metal tube one earlier respectively, from gathering after high-temperature conduit passes, is connected and gathers on the low temperature water pipe again.

In addition, the low temperature water pipe that gathers described in the utility model is arranged in and gathers in the high-temperature conduit.Be convenient to install, also be beneficial to insulation.

Description of drawings

Fig. 1 is a kind of structural representation of the present utility model.

Fig. 2 is that cut-away view is amplified in the part among Fig. 1.

Fig. 3 is a kind of A-A sectional drawing among Fig. 1.

Fig. 4 is second kind of A-A sectional drawing among Fig. 1.

Fig. 5 is the third A-A sectional drawing among Fig. 1.

Fig. 6 is the another kind of local cut-away view that amplifies of the present utility model.

The specific embodiment

As shown in Figure 1, 2, the utility model is made up of quadruplet thermal-collecting tube 1 at least, the metal tube 1 that passes in each thermal-collecting tube 1 is attempted by respectively and gathers on the high-temperature conduit 4, after the metal tube 23 that passes from metal tube one 2 openends of each thermal-collecting tube 1 passes the through hole that gathers high-temperature conduit 4, be attempted by again and gather on the low temperature water pipe 5.Should carry out sealing between metal tube 23 and the through hole that gathers high-temperature conduit 4 that passed.Between the openend of interior glass blind pipe 6 and metal tube 1, O-ring seal 8 is set.

As shown in Figure 3, form mutually in the same way by transparent interior glass blind pipe 6, outer glass blind pipe 7, metal tube 1 and the metal tube 23 of socket by two for every case heat-collection pipe 1, inside and outside two glass

blind pipes

6,7 are in the mutual welding of openend, and between two glass blind pipes vacuum chamber are set.Metal tube one 2 arranged off-centre are in interior glass blind pipe 6, and metal tube 23 arranged concentric are in metal tube 1.

The lower end of metal tube 1 is a cecum, and metal tube 23 is a straight pipe, the gap is set at the interior end of the lower end of metal tube 23 and metal tube 1.As shown in Figure 2.

As Fig. 3, put radial four metal fins 11 that are arranged at metal tube one 2 peripheral hardwares, the outer surface of each metal fin 11 is respectively equipped with solar energy decalescence films; Solar energy decalescence films 10 is established in metal tube one 2 outer platings.Interior glass blind pipe 6 and outside W shape optically focused reflecting element 9 is set between the glass blind pipe 7.

As shown in Figure 4, interior glass blind pipe 6 arranged concentric are outside in the glass blind pipe 7.Outside metal tube 1, connect three circular-arc metal fins 11 that are provided with solar energy decalescence films by three groups of dowels 12 respectively.

As shown in Figure 5, interior glass blind pipe 6 arranged off-centre are outside in the glass blind pipe 7.Outside interior glass blind pipe 6, solar energy decalescence films 10 is set.Outside metal tube 1, connect three circular-arc metal fins 11 by three groups of dowels 12 respectively.

As shown in Figure 6, can be arranged in and gather in the high-temperature conduit 4 gathering low temperature water pipe 5.

Claims

1. double-glass evacuated tube formula solar thermal collector, comprise at least three case heat-collection pipes, every case heat-collection pipe comprises two in the same way mutually in socket transparent, outer glass blind pipe, in, outer two glass blind pipes are in the mutual welding of openend, and between two glass blind pipes, vacuum chamber is set, it is characterized in that: in the interior glass blind pipe of every case heat-collection pipe, all arrange metal tube one and metal tube two, metal tube two is arranged in the metal tube one, the lower end of metal tube one is a cecum, metal tube two is a straight pipe, and the gap that is interconnected is set at the interior end of the lower end of metal tube two and metal tube one; Outside metal tube one, metal fin is set; The outer also clearance-type of glass blind pipe was supported on the openend of interior glass blind pipe in the openend of metal tube one passed, and the openend of metal tube two passes the openend of metal tube one.

2. according to the described double-glass evacuated tube formula of claim 1 solar thermal collector, it is characterized in that described fin is radial, an end is connected on the metal tube one, and the other end is away from metal tube one.

3. according to the described double-glass evacuated tube formula of claim 1 solar thermal collector, it is characterized in that at least two of described fins, be circular-arc, be connected on the metal tube one by dowel.

4. according to claim 1 or 2 or 3 described double-glass evacuated tube formula solar thermal collectors, it is characterized in that the outer surface of described metal fin is provided with solar energy decalescence films.

5. according to claim 1 or 2 described double-glass evacuated tube formula solar thermal collectors, it is characterized in that the outer surface of metal tube one is provided with solar energy decalescence films.

6. according to claim 1 or 2 or 3 described double-glass evacuated tube formula solar thermal collectors, the outer surface of glass blind pipe is provided with solar energy decalescence films in it is characterized in that.

7. according to claim 1 or 2 or 3 described double-glass evacuated tube formula solar thermal collectors, it is characterized in that between inside and outside two glass blind pipes, the optically focused reflecting element being set.

8. according to the described double-glass evacuated tube formula of claim 1 solar thermal collector, the openend that it is characterized in that the metal tube two of every case heat-collection pipe stretches out from the openend of metal tube one earlier respectively, from gathering after high-temperature conduit passes, be connected and gather on the low temperature water pipe again.

9. described according to Claim 8 double-glass evacuated tube formula solar thermal collector is characterized in that the described low temperature water pipe that gathers is arranged in and gathers in the high-temperature conduit.