CN105004068A

CN105004068A - Solar heat collector

Info

Publication number: CN105004068A
Application number: CN201410168215.4A
Authority: CN
Inventors: 余华阳
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-04-19
Filing date: 2014-04-19
Publication date: 2015-10-28

Abstract

The invention relates to a solar heat collector. The solar heat collector comprises a heat absorbing plate (1), a flat box (2) and a u-shaped groove (3); the heat absorbing plate (1) is a glass plate with a plurality of through holes, and the heat absorbing plate (1) is sleeved with the flat box (2); the end of the flat box (2) and the surface of the heat absorbing plate (1) are sealed, and sealing space is vacuumized; and the two ends of the heat absorbing plate (1) are internally connected to the u-shaped groove (3), and pipes are formed between the u-shaped groove (3) and the heat absorbing plate (1) and are flow-sharing pipes at the upper end and the lower end of the heat absorbing plate (1). The flow-sharing pipes are formed by the u-shaped groove, so that manufacturing is easy; the heat absorbing plate is internally connected to the u-shaped groove, the storage amount of media in the collector is minimum, the heat absorption face is maximum, the efficiency is further improved, the collector is made thinner and is installed on a building framework more conveniently, and the solar heat collector is made into an ultra-thin solar wall capable of replacing a filler wall and a glass curtain wall. Solar energy and the building are better integrated, and the using range of the heat collector is further expanded.

Description

A kind of solar thermal collector

Technical field

The present invention is a kind of solar thermal collector, belongs to Application of Solar Energy field.

Background technology

Flat type solar heat collector, is be arranged on by absorber plate in insulation half box, covers one deck glass above.Absorber plate adopts the precious metals such as copper aluminium, and cost is too high; The upper surface of absorber plate only has one deck glass, and it is poor to be incubated, and efficiency is low; Glass vacuum pipe heat collector, it is vacuum heat-preserving, leaving water temperature is high, but tube pitch is from greatly, solar energy utilization ratio is too low, all-glass vacuum flat plate collector overcomes the shortcoming of above-mentioned two kinds of heat collectors, has gathered again the advantage of above-mentioned two kinds of heat collectors simultaneously, has become the Application of Solar Energy conversion equipment that cost minimum efficiency is the highest.But the common stream pipe manufacture difficulty that it has some ozzles is larger; Be connected in ozzle in the through hole of glass plate, just make the aperture of through hole large, the medium reserves inside heat collector are large, start slow, cause collecting efficiency desirable not enough when heat collector is worked; Test with vacuum tube, the first day just only has 40 degree in second day by solar energy heating to the conduction oil of 130 degree, and the heat energy in heat collector just lost substantially.So reducing the heat transfer medium reserves in heat collector to greatest extent and increase the heat-absorbent surface of medium to greatest extent, is one of research direction improving solar thermal collector collecting efficiency further.

Summary of the invention

Object of the present invention, is to provide a kind of cost lower; Start faster, the thermal efficiency is higher; Be more convenient on metope with building integrated solar heat collector.

Technical scheme: a kind of solar thermal collector, is characterized in that: this heat collector comprises absorber plate, flat box and u shape groove; All parts make of glass entirely; Absorber plate is the glass plate with some through holes, and absorber plate is longer than flat box, and flat box is enclosed within the outside of absorber plate; Supporter is had between flat box and absorber plate; The selective absorber coatings of upper surface of absorber plate; The termination of flat box and absorber plate face seal, seal cavity vacuumizes; Be connected to u shape groove in the two ends of absorber plate, the termination of the bottom land distance absorber plate of u shape groove is spaced a distance, and this distance makes to form pipeline between u shape groove and absorber plate, and this pipeline is the common stream pipe of absorber plate upper/lower terminal, flows altogether on pipe and has ozzle.

Because be absorber plate two ends in be connected to u shape groove, so the minimum-value aperture of through hole is just unrestricted on absorber plate, through hole can be made oblong aperture, and the height in hole may diminish to 1 millimeter, fewer than the height of glass vacuum pipe heat collector 47 millimeters tens times; On the other hand, the hole wall of through hole can accomplish that thickness is less than 2 millimeters, and interval can be greater than 20 millimeters, and like this, dielectric surface just accounts for 90% of heat-absorbent surface; Such heat collector just has minimum heat transfer medium reserves and maximum endotherm area, effectively improves heat absorption efficiency; Meanwhile, the structural rate of u shape groove speaks out of turn common stream pipe simply, is easier to make, is also easier to reduce costs; The height reduction of through hole, make the thickness of heat collector additionally reduce 6 to 7 millimeters, like this, the gross thickness of heat collector is only 13 millimeters, not only light but also thin, due to ozzle overleaf, be exactly a sheet glass viewed from front, but than glass sound-insulating and heat-insulating, like this, just can install on the steel framework surface of building frame, (inside steel framework for wire glass) becomes the ultra-thin Solar wall that can substitute infilled wall and glass curtain wall, realizes the integrated of solar energy and building better.

Accompanying drawing explanation

Fig. 1 is the schematic diagram of this heat collector.

Fig. 2 is the piece construction schematic diagram of this heat collector.

Detailed description of the invention

Below in conjunction with accompanying drawing, detailed description of the invention is described.The material prescription of this solar thermal collector and technological process have identical or akin place with glass vacuum pipe heat collector.With reference to the Mould Machining figure of solution design absorber plate (1), flat box (2) and u shape groove (3), make mould.Utilize mould after frit heating and melting, make absorber plate (1), flat box (2) and u shape groove (3); And make coating for selective absorption at the upper surface of absorber plate (1); The length of this coating is less than the length of flat box (2); Absorber plate (1) is for having the glass plate of some through holes, and absorber plate (1) is longer than flat box (2), and flat box (2) is enclosed within the outside of absorber plate (1); Supporter is had between flat box (2) and absorber plate (1); The termination of flat box (2) and absorber plate (1) face seal, seal cavity vacuumizes; U shape groove (3) is connected in the two ends of absorber plate (1), there is a segment distance termination of bottom land distance absorber plate (1) of u shape groove (3), this distance makes to form pipeline between u shape groove (3) and absorber plate (1), this pipeline is the common stream pipe at the upper and lower two ends of absorber plate (1), flows altogether on pipe and has ozzle.Ozzle is drawn from the side of u shape groove (3) and the back side of heat collector, also can draw from the two ends of u shape groove.

The sealing of the termination of flat box (2) and u shape groove (3) and absorber plate (1), all uses glass powder with low melting point welded seal.

After flat box (2) is made, through chemical tempering process, become safety glass.Also can with being heat-treated to as safety glass.

The pipe that flows altogether be up and down made up of u shape groove (3) and absorber plate (1) is square tube, and the section of square tube is rectangle, and ozzle is circular, and the outer surface of circular ozzle has the spiral shell mosquito be connected with extraneous pipe fitting.

U shape groove (3) and absorber plate (1) glass being added with colouring agent make.

The bottom land of the u shape groove (3) not having ozzle is removed and just becomes rectangular circle, the half of rectangular circle is enclosed within the termination of a slice absorber plate (1), second half is enclosed within the termination of another sheet absorber plate (1), just absorber plate assembly series connection more than two panels or two panels is used.This, for large area pitched roof or hillside heat collecting field, can save a lot of pipe fitting.

Reflective space adiabatic heat-insulation coating is applied at the lower surface of the surface of u shape groove (3) and absorber plate (1) or flat box (2).

Between absorber plate (1) and flat box (2), deposit getter, this getter is in the side of absorber plate (1).

Supporter between flat box (2) and absorber plate (1), is arranged on the outer surface of absorber plate (1) or the inner surface with flat box (2), all integrated with attachment homogeneity, becomes the protrusion of surface of attachment.

Four angles of flat box (2) are respectively provided with installing hole.

Claims

1. a solar thermal collector, is characterized in that: this heat collector comprises absorber plate (1), flat box (2) and u shape groove (3); Absorber plate (1) is for having the glass plate of some through holes, and absorber plate (1) is longer than flat box (2), and flat box (2) is enclosed within the outside of absorber plate (1); Supporter is had between flat box (2) and absorber plate (1); The selective absorber coatings of upper surface of absorber plate (1); The termination of flat box (2) and absorber plate (1) face seal, seal cavity vacuumizes; U shape groove (3) is connected in the two ends of absorber plate (1), there is a segment distance termination of bottom land distance absorber plate (1) of u shape groove (3), this distance makes to form pipeline between u shape groove (3) and absorber plate (1), this pipeline is the common stream pipe of absorber plate (1) upper/lower terminal, flows altogether on pipe and has ozzle.

2. a kind of solar thermal collector according to claim 1, is characterized in that: the sealing of the termination of flat box (2) and u shape groove (3) and absorber plate (1), all uses glass powder with low melting point welded seal.

3. a kind of solar thermal collector according to claim 1, is characterized in that: after flat box (2) is made, through chemical tempering process, become safety glass.

4. a kind of solar thermal collector according to claim 1, it is characterized in that: the pipe that flows altogether be up and down made up of u shape groove (3) and absorber plate (1) is square tube, the section of square tube is rectangle, ozzle is circular, and the outer surface of circular ozzle has the spiral shell mosquito be connected with extraneous pipe fitting.

5. a kind of solar thermal collector according to claim 1, is characterized in that: u shape groove (3) and absorber plate (1) glass being added with colouring agent make.

6. a kind of solar thermal collector according to claim 1, it is characterized in that: being removed by the bottom land of the u shape groove (3) not having ozzle just becomes rectangular circle, the half of rectangular circle is enclosed within the termination of a slice absorber plate (1), second half is enclosed within the termination of another sheet absorber plate (1), just absorber plate assembly series connection more than two panels or two panels is used.

7. a kind of solar thermal collector according to claim 1, is characterized in that: apply reflective space adiabatic heat-insulation coating at the lower surface of the surface of u shape groove (3) and absorber plate (1) or flat box (2).

8. a kind of solar thermal collector according to claim 1, is characterized in that: between absorber plate (1) and flat box (2), deposit getter, this getter is in the side of absorber plate (1).

9. a kind of solar thermal collector according to claim 1, it is characterized in that: the supporter between flat box (2) and absorber plate (1), be arranged on the outer surface of absorber plate (1) or the inner surface with flat box (2), all integrated with attachment homogeneity, become the protrusion of surface of attachment.

10. a kind of solar thermal collector according to claim 1, is characterized in that: four angles of flat box (2) are respectively provided with installing hole.